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171 vulnerabilities by Traefik
CVE-2026-88012 (GCVE-0-2026-88012)
Vulnerability from nvd – Published: 2026-09-10 15:35 – Updated: 2026-09-11 20:33
VLAI
EPSS
VEX
Title
Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connection and the HTTP/3 server has no corresponding QUIC stream deadline. An unauthenticated client can use a slow request body, trickling data indefinitely while holding a request and an upstream connection open and exhausting backends with bounded connection pools. This issue is fixed in 2.11.56 and 3.7.12.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 16:34 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13717 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/a8d0bc4… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.12 | x_refsource_MISC |
Impacted products
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{
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"x_refsource_MISC"
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"url": "https://github.com/traefik/traefik/commit/a8d0bc425859dde7481a6c9a324e610b81d754d0"
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{
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CVE-2026-88011 (GCVE-0-2026-88011)
Vulnerability from nvd – Published: 2026-09-10 15:31 – Updated: 2026-09-10 15:31
VLAI
EPSS
VEX
Title
Traefik: ForwardAuth identity spoofing via dot-form header alias
Summary
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.
Severity
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13720 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/0331801… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.12 | x_refsource_MISC |
Impacted products
{
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"vendor": "traefik",
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}
]
}
],
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}
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{
"name": "https://github.com/traefik/traefik/releases/tag/v2.11.56",
"tags": [
"x_refsource_MISC"
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},
{
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CVE-2026-88009 (GCVE-0-2026-88009)
Vulnerability from nvd – Published: 2026-09-10 15:01 – Updated: 2026-09-10 15:40
VLAI
EPSS
VEX
Title
Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim, bypassing path-scoped routing, middleware guards and access logging
Summary
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path evaluates routing, path sanitization, forwardAuth, encodedCharacters, and access logging against a path normalized to / but forwards URL.Opaque verbatim to the backend, allowing cross-vhost routing bypass, path-scoped authorization bypass, and access-log evasion when the backend interprets the opaque target as a path. This issue is fixed in 2.11.57 and 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:39 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13796 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/58d1e9c… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
Impacted products
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"timestamp": "2026-09-10T15:39:54.256441Z",
"version": "2.0.3"
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}
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}
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}
],
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},
{
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"description": "CWE-1286: Improper Validation of Syntactic Correctness of Input",
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}
]
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{
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"x_refsource_MISC"
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},
{
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"tags": [
"x_refsource_MISC"
],
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CVE-2026-88008 (GCVE-0-2026-88008)
Vulnerability from nvd – Published: 2026-09-10 14:57 – Updated: 2026-09-10 16:56
VLAI
EPSS
VEX
Title
Traefik: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') and Incorrect Authorization
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backend. If the backend accepts h2c and returns 101 Switching Protocols, Traefik enters a raw tunnel and no longer applies routers, BasicAuth, ForwardAuth, IPAllowList, RateLimit, access logging, metrics, or tracing to later HTTP/2 requests, allowing an unauthenticated request through an unprotected route to reach protected paths on the same backend. This issue is fixed in 2.11.57 and 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 16:54 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13797 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/a277e94… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
Impacted products
{
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"adp": [
{
"metrics": [
{
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"content": {
"id": "CVE-2026-88008",
"options": [
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},
{
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},
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-10T16:54:44.054899Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
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{
"product": "traefik",
"vendor": "traefik",
"versions": [
{
"status": "affected",
"version": "\u003e= 2.11.26, \u003c 2.11.57"
},
{
"status": "affected",
"version": "\u003e= 3.4.2, \u003c 3.7.13"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backend. If the backend accepts h2c and returns 101 Switching Protocols, Traefik enters a raw tunnel and no longer applies routers, BasicAuth, ForwardAuth, IPAllowList, RateLimit, access logging, metrics, or tracing to later HTTP/2 requests, allowing an unauthenticated request through an unprotected route to reach protected paths on the same backend. This issue is fixed in 2.11.57 and 3.7.13."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-444",
"description": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863: Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
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CVE-2026-88007 (GCVE-0-2026-88007)
Vulnerability from nvd – Published: 2026-09-10 14:47 – Updated: 2026-09-10 15:38
VLAI
EPSS
VEX
Title
Traefik HTTP/3 Backend NTLM Connection Reuse
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.0 until 2.11.57 and 3.7.13, the HTTP/3 entrypoint ConnContext does not call service.AddTransportOnContext, so kerberosRoundTripper uses a shared backend transport instead of a transport dedicated to each frontend connection. With HTTP/3 enabled, a backend using connection-bound NTLM or Negotiate authentication, and backend keep-alive, an unrelated client can reuse a backend connection authenticated for a victim, read victim-only data, and act as that victim without the victim credentials. This issue is fixed in 2.11.57 and 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:38 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13812 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/ff39c47… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
Impacted products
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CVE-2026-88004 (GCVE-0-2026-88004)
Vulnerability from nvd – Published: 2026-09-10 14:33 – Updated: 2026-09-10 15:10
VLAI
EPSS
VEX
Title
Traefik entrypoint header-name sanitization bypassed via request trailers
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 3.2.0 until 3.7.13, Traefik entrypoint defenses aliasHeadersStrategy, underscoreHeadersStrategy, and forwardedHeaders inspect req.Header but not req.Trailer, allowing an unauthenticated client to submit an aliasing or trusted header name in an HTTP/1.1 chunked trailer or an HTTP/2 trailer. When the retry or buffering middleware reads the body before the reverse proxy clones the request, the attacker-controlled trailer value reaches a backend that merges trailers into the header namespace, bypassing the documented delete or reject behavior and potentially spoofing identity or forwarded routing data. This issue is fixed in 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:10 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13822 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/55bbda4… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
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CVE-2026-88879 (GCVE-0-2026-88879)
Vulnerability from nvd – Published: 2026-09-10 13:05 – Updated: 2026-09-10 15:04
VLAI
EPSS
VEX
Title
Traefik before v2.11.56 Identity Spoofing via Header Alias
Summary
Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, X_Auth_User and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable names from header names (CGI, WSGI, PHP, NGINX and others) collapse them into a single variable. A client can therefore smuggle a dot-form alias of a header that Traefik manages past the middleware managing it — for example supplying X.Authenticated.User alongside the canonical X-Authenticated-User written by the ForwardAuth middleware — causing such a backend to read the client-supplied value instead of the identity Traefik asserted. In the tested configuration (PHP 8.2 built-in SAPI over an HTTP/1 backend path), Go's lexical header ordering makes the attacker-supplied value win deterministically, so a client that ForwardAuth admits as a low-privilege identity can be treated by the backend as a different user or role. Any header Traefik sets is affected, not only ForwardAuth's. This is an incomplete fix for GHSA-x677-9fxg-v5c5, which blocked only the underscore form. Fixed in v2.11.56 and v3.7.12, which add the aliasHeadersStrategy entry-point option; because it defaults to 'keep' for backwards compatibility, it must be explicitly set to 'delete' or 'reject' for the fix to take effect. Unmaintained release lines will not receive a patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:03 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-27 00:00
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CVE-2026-88878 (GCVE-0-2026-88878)
Vulnerability from nvd – Published: 2026-09-10 13:05 – Updated: 2026-09-10 14:55
VLAI
EPSS
VEX
Title
Traefik v2.8.2 through v3.6 HTTP/3 Timeout Bypass
Summary
Traefik is an HTTP reverse proxy and load balancer. In versions >= v2.8.2 through <= v2.11.55 and >= v3.0.0 through <= v3.7.11, the entryPoints.<name>.transport.respondingTimeouts settings — notably readTimeout, which is enabled by default at 60s — are not applied to the HTTP/3 request path. readTimeout is enforced as a deadline on the underlying TCP connection, which cannot be applied to a QUIC stream, and Traefik's HTTP/3 server is constructed without any timeout. As a result, on entry points with HTTP/3 enabled, an unauthenticated remote client that trickles request body bytes can hold a request open indefinitely and, with it, one upstream connection per request, exhausting bounded backend connection pools and causing denial of service. The issue was introduced in v2.8.2 when a quic-go API change removed the embedded http.Server that carried these timeouts. Fixed in v2.11.56 and v3.7.12.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:22 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-2.8.… | third-party-advisory |
Impacted products
Date Public
2026-08-27 00:00
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CVE-2026-88877 (GCVE-0-2026-88877)
Vulnerability from nvd – Published: 2026-09-10 13:05 – Updated: 2026-09-10 14:10
VLAI
EPSS
VEX
Title
Traefik v3.7.0 Authentication Bypass via from-to-www-redirect
Summary
Traefik is a HTTP reverse proxy and load balancer. In versions >= v3.7.0 and <= v3.7.11, the Kubernetes ingress-nginx provider mishandles Ingresses that carry both an authentication annotation and the nginx.ingress.kubernetes.io/from-to-www-redirect annotation. For such Ingresses the provider creates an additional 'sibling' router that matches on the host alone, carries only the RedirectRegex middleware, and still points at the parent router's protected backend service. Because RedirectRegex is not a terminal handler, a request its pattern does not match is forwarded to the backend, and because the redirect pattern only accepts a numeric port while Traefik's host matcher canonicalizes the authority via net.SplitHostPort, a request with a non-numeric or empty port (for example 'Host: www.example.com:x') selects the sibling router, misses the redirect, and is proxied to the protected backend with none of the Ingress's annotation-derived middlewares applied. This discards not only authentication (e.g. BasicAuth) but every annotation-derived middleware, including source-IP allowlisting. Traefik v2 and v3 releases before v3.7.0 are not affected. The issue is fixed in v3.7.12.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:09 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-3.7.… | third-party-advisory |
Impacted products
Date Public
2026-08-27 00:00
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CVE-2026-85597 (GCVE-0-2026-85597)
Vulnerability from nvd – Published: 2026-09-04 11:30 – Updated: 2026-09-05 10:28
VLAI
EPSS
VEX
Title
Traefik before v2.11.55 and v3.0.0 through v3.7.10 mTLS Bypass via TLS Option Conflict
Summary
Traefik before v2.11.55 and v3.0.0 through v3.7.10 contain a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiting shared TLS resolution across multiple hostnames in a single router rule, causing the strict mTLS requirement to fall back to default options for all hosts.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 18:03 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CVE-2026-85596 (GCVE-0-2026-85596)
Vulnerability from nvd – Published: 2026-09-04 11:30 – Updated: 2026-09-10 15:09
VLAI
EPSS
VEX
Title
Traefik v3.7 Authentication Bypass via TLS Option Conflict
Summary
Traefik versions >= v3.7.0 and <= v3.7.10 contain an authentication bypass in the Kubernetes Ingress NGINX provider. The TLS option generated for an Ingress carrying the nginx.ingress.kubernetes.io/auth-tls-secret annotation was named after the Ingress namespace and name. As a result, two Ingress objects sharing the same host, the same client CA secret, and the same client-authentication mode produced two distinct TLS option names for that host. Traefik treats this as a TLS options conflict and falls back to the entry point's default TLS configuration, which does not request a client certificate, so a route configured with nginx.ingress.kubernetes.io/auth-tls-verify-client: "on" becomes reachable without a client certificate. Only the v3.7 line is affected; the issue is fixed in v3.7.11.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:19 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-3.7-… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CVE-2026-85595 (GCVE-0-2026-85595)
Vulnerability from nvd – Published: 2026-09-04 11:29 – Updated: 2026-09-05 10:28
VLAI
EPSS
VEX
Title
Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth
Summary
Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 13:55 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CVE-2026-85594 (GCVE-0-2026-85594)
Vulnerability from nvd – Published: 2026-09-04 11:29 – Updated: 2026-09-08 14:47
VLAI
EPSS
VEX
Title
Traefik v3.7.1 crossProviderNamespaces Bypass via Service Middleware
Summary
Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its Service, and if that middleware injects backend credentials, recover them at a controlled backend.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 14:47 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-3.7.… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CVE-2026-71327 (GCVE-0-2026-71327)
Vulnerability from nvd – Published: 2026-08-06 16:38 – Updated: 2026-08-07 15:41
VLAI
EPSS
VEX
Title
Traefik: Gateway API route identity collision allows cross-namespace backend hijacking
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 3.0.0 until 3.6.25 and 3.7.10, Traefik's Kubernetes Gateway API provider in pkg/provider/kubernetes/gateway/httproute.go, grpcroute.go, tcproute.go, and tlsroute.go builds HTTPRoute, GRPCRoute, TCPRoute, and TLSRoute router and service identities by hyphen-concatenating namespace, route name, Gateway identity, entry point, and rule index, allowing colliding Routes to overwrite another namespace's backend. This issue is fixed in 3.6.25 and 3.7.10.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 15:40 UTC
CWE
- CWE-694 - Use of Multiple Resources with Duplicate Identifier
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13580 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/a764166… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.6.25 | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.10 | x_refsource_MISC |
Impacted products
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CVE-2026-88012 (GCVE-0-2026-88012)
Vulnerability from cvelistv5 – Published: 2026-09-10 15:35 – Updated: 2026-09-11 20:33
VLAI
EPSS
VEX
Title
Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connection and the HTTP/3 server has no corresponding QUIC stream deadline. An unauthenticated client can use a slow request body, trickling data indefinitely while holding a request and an upstream connection open and exhausting backends with bounded connection pools. This issue is fixed in 2.11.56 and 3.7.12.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 16:34 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13717 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/a8d0bc4… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.12 | x_refsource_MISC |
Impacted products
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CVE-2026-88011 (GCVE-0-2026-88011)
Vulnerability from cvelistv5 – Published: 2026-09-10 15:31 – Updated: 2026-09-10 15:31
VLAI
EPSS
VEX
Title
Traefik: ForwardAuth identity spoofing via dot-form header alias
Summary
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.
Severity
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13720 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/0331801… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.12 | x_refsource_MISC |
Impacted products
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CVE-2026-88009 (GCVE-0-2026-88009)
Vulnerability from cvelistv5 – Published: 2026-09-10 15:01 – Updated: 2026-09-10 15:40
VLAI
EPSS
VEX
Title
Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim, bypassing path-scoped routing, middleware guards and access logging
Summary
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path evaluates routing, path sanitization, forwardAuth, encodedCharacters, and access logging against a path normalized to / but forwards URL.Opaque verbatim to the backend, allowing cross-vhost routing bypass, path-scoped authorization bypass, and access-log evasion when the backend interprets the opaque target as a path. This issue is fixed in 2.11.57 and 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:39 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13796 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/58d1e9c… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
Impacted products
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CVE-2026-88008 (GCVE-0-2026-88008)
Vulnerability from cvelistv5 – Published: 2026-09-10 14:57 – Updated: 2026-09-10 16:56
VLAI
EPSS
VEX
Title
Traefik: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') and Incorrect Authorization
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backend. If the backend accepts h2c and returns 101 Switching Protocols, Traefik enters a raw tunnel and no longer applies routers, BasicAuth, ForwardAuth, IPAllowList, RateLimit, access logging, metrics, or tracing to later HTTP/2 requests, allowing an unauthenticated request through an unprotected route to reach protected paths on the same backend. This issue is fixed in 2.11.57 and 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 16:54 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13797 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/a277e94… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
Impacted products
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CVE-2026-88007 (GCVE-0-2026-88007)
Vulnerability from cvelistv5 – Published: 2026-09-10 14:47 – Updated: 2026-09-10 15:38
VLAI
EPSS
VEX
Title
Traefik HTTP/3 Backend NTLM Connection Reuse
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.0 until 2.11.57 and 3.7.13, the HTTP/3 entrypoint ConnContext does not call service.AddTransportOnContext, so kerberosRoundTripper uses a shared backend transport instead of a transport dedicated to each frontend connection. With HTTP/3 enabled, a backend using connection-bound NTLM or Negotiate authentication, and backend keep-alive, an unrelated client can reuse a backend connection authenticated for a victim, read victim-only data, and act as that victim without the victim credentials. This issue is fixed in 2.11.57 and 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:38 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13812 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/ff39c47… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
Impacted products
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CVE-2026-88004 (GCVE-0-2026-88004)
Vulnerability from cvelistv5 – Published: 2026-09-10 14:33 – Updated: 2026-09-10 15:10
VLAI
EPSS
VEX
Title
Traefik entrypoint header-name sanitization bypassed via request trailers
Summary
Traefik is an open source HTTP reverse proxy and load balancer. From 3.2.0 until 3.7.13, Traefik entrypoint defenses aliasHeadersStrategy, underscoreHeadersStrategy, and forwardedHeaders inspect req.Header but not req.Trailer, allowing an unauthenticated client to submit an aliasing or trusted header name in an HTTP/1.1 chunked trailer or an HTTP/2 trailer. When the retry or buffering middleware reads the body before the reverse proxy clones the request, the attacker-controlled trailer value reaches a backend that merges trailers into the header namespace, bypassing the documented delete or reject behavior and potentially spoofing identity or forwarded routing data. This issue is fixed in 3.7.13.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:10 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | x_refsource_CONFIRM |
| https://github.com/traefik/traefik/pull/13822 | x_refsource_MISC |
| https://github.com/traefik/traefik/commit/55bbda4… | x_refsource_MISC |
| https://github.com/traefik/traefik/releases/tag/v3.7.13 | x_refsource_MISC |
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CVE-2026-88879 (GCVE-0-2026-88879)
Vulnerability from cvelistv5 – Published: 2026-09-10 13:05 – Updated: 2026-09-10 15:04
VLAI
EPSS
VEX
Title
Traefik before v2.11.56 Identity Spoofing via Header Alias
Summary
Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, X_Auth_User and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable names from header names (CGI, WSGI, PHP, NGINX and others) collapse them into a single variable. A client can therefore smuggle a dot-form alias of a header that Traefik manages past the middleware managing it — for example supplying X.Authenticated.User alongside the canonical X-Authenticated-User written by the ForwardAuth middleware — causing such a backend to read the client-supplied value instead of the identity Traefik asserted. In the tested configuration (PHP 8.2 built-in SAPI over an HTTP/1 backend path), Go's lexical header ordering makes the attacker-supplied value win deterministically, so a client that ForwardAuth admits as a low-privilege identity can be treated by the backend as a different user or role. Any header Traefik sets is affected, not only ForwardAuth's. This is an incomplete fix for GHSA-x677-9fxg-v5c5, which blocked only the underscore form. Fixed in v2.11.56 and v3.7.12, which add the aliasHeadersStrategy entry-point option; because it defaults to 'keep' for backwards compatibility, it must be explicitly set to 'delete' or 'reject' for the fix to take effect. Unmaintained release lines will not receive a patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 15:03 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-27 00:00
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CVE-2026-88878 (GCVE-0-2026-88878)
Vulnerability from cvelistv5 – Published: 2026-09-10 13:05 – Updated: 2026-09-10 14:55
VLAI
EPSS
VEX
Title
Traefik v2.8.2 through v3.6 HTTP/3 Timeout Bypass
Summary
Traefik is an HTTP reverse proxy and load balancer. In versions >= v2.8.2 through <= v2.11.55 and >= v3.0.0 through <= v3.7.11, the entryPoints.<name>.transport.respondingTimeouts settings — notably readTimeout, which is enabled by default at 60s — are not applied to the HTTP/3 request path. readTimeout is enforced as a deadline on the underlying TCP connection, which cannot be applied to a QUIC stream, and Traefik's HTTP/3 server is constructed without any timeout. As a result, on entry points with HTTP/3 enabled, an unauthenticated remote client that trickles request body bytes can hold a request open indefinitely and, with it, one upstream connection per request, exhausting bounded backend connection pools and causing denial of service. The issue was introduced in v2.8.2 when a quic-go API change removed the embedded http.Server that carried these timeouts. Fixed in v2.11.56 and v3.7.12.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:22 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-2.8.… | third-party-advisory |
Impacted products
Date Public
2026-08-27 00:00
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CVE-2026-88877 (GCVE-0-2026-88877)
Vulnerability from cvelistv5 – Published: 2026-09-10 13:05 – Updated: 2026-09-10 14:10
VLAI
EPSS
VEX
Title
Traefik v3.7.0 Authentication Bypass via from-to-www-redirect
Summary
Traefik is a HTTP reverse proxy and load balancer. In versions >= v3.7.0 and <= v3.7.11, the Kubernetes ingress-nginx provider mishandles Ingresses that carry both an authentication annotation and the nginx.ingress.kubernetes.io/from-to-www-redirect annotation. For such Ingresses the provider creates an additional 'sibling' router that matches on the host alone, carries only the RedirectRegex middleware, and still points at the parent router's protected backend service. Because RedirectRegex is not a terminal handler, a request its pattern does not match is forwarded to the backend, and because the redirect pattern only accepts a numeric port while Traefik's host matcher canonicalizes the authority via net.SplitHostPort, a request with a non-numeric or empty port (for example 'Host: www.example.com:x') selects the sibling router, misses the redirect, and is proxied to the protected backend with none of the Ingress's annotation-derived middlewares applied. This discards not only authentication (e.g. BasicAuth) but every annotation-derived middleware, including source-IP allowlisting. Traefik v2 and v3 releases before v3.7.0 are not affected. The issue is fixed in v3.7.12.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:09 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-3.7.… | third-party-advisory |
Impacted products
Date Public
2026-08-27 00:00
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CVE-2026-85597 (GCVE-0-2026-85597)
Vulnerability from cvelistv5 – Published: 2026-09-04 11:30 – Updated: 2026-09-05 10:28
VLAI
EPSS
VEX
Title
Traefik before v2.11.55 and v3.0.0 through v3.7.10 mTLS Bypass via TLS Option Conflict
Summary
Traefik before v2.11.55 and v3.0.0 through v3.7.10 contain a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiting shared TLS resolution across multiple hostnames in a single router rule, causing the strict mTLS requirement to fall back to default options for all hosts.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 18:03 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CVE-2026-85596 (GCVE-0-2026-85596)
Vulnerability from cvelistv5 – Published: 2026-09-04 11:30 – Updated: 2026-09-10 15:09
VLAI
EPSS
VEX
Title
Traefik v3.7 Authentication Bypass via TLS Option Conflict
Summary
Traefik versions >= v3.7.0 and <= v3.7.10 contain an authentication bypass in the Kubernetes Ingress NGINX provider. The TLS option generated for an Ingress carrying the nginx.ingress.kubernetes.io/auth-tls-secret annotation was named after the Ingress namespace and name. As a result, two Ingress objects sharing the same host, the same client CA secret, and the same client-authentication mode produced two distinct TLS option names for that host. Traefik treats this as a TLS options conflict and falls back to the entry point's default TLS configuration, which does not request a client certificate, so a route configured with nginx.ingress.kubernetes.io/auth-tls-verify-client: "on" becomes reachable without a client certificate. Only the v3.7 line is affected; the issue is fixed in v3.7.11.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:19 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-3.7-… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CVE-2026-85595 (GCVE-0-2026-85595)
Vulnerability from cvelistv5 – Published: 2026-09-04 11:29 – Updated: 2026-09-05 10:28
VLAI
EPSS
VEX
Title
Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth
Summary
Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 13:55 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CVE-2026-85594 (GCVE-0-2026-85594)
Vulnerability from cvelistv5 – Published: 2026-09-04 11:29 – Updated: 2026-09-08 14:47
VLAI
EPSS
VEX
Title
Traefik v3.7.1 crossProviderNamespaces Bypass via Service Middleware
Summary
Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its Service, and if that middleware injects backend credentials, recover them at a controlled backend.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 14:47 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-3.7.… | third-party-advisory |
Impacted products
Date Public
2026-08-21 00:00
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CERTFR-2026-AVI-1127
Vulnerability from certfr_avis - Published: 2026-09-07 - Updated: 2026-09-07
De multiples vulnérabilités ont été découvertes dans Traefik. Elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Traefik versions ant\u00e9rieures \u00e0 v2.11.57",
"product": {
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"vendor": {
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"scada": false
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}
},
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"product": {
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"vendor": {
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}
}
],
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"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [],
"initial_release_date": "2026-09-07T00:00:00",
"last_revision_date": "2026-09-07T00:00:00",
"links": [],
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"revisions": [
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"revision_date": "2026-09-07T00:00:00.000000"
}
],
"risks": [
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"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Traefik. Elles permettent \u00e0 un attaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Traefik",
"vendor_advisories": [
{
"published_at": "2026-09-07",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-f52w-8j3h-j724",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-f52w-8j3h-j724"
},
{
"published_at": "2026-09-07",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-v67p-phpq-fc8x",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-v67p-phpq-fc8x"
},
{
"published_at": "2026-09-07",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-w4v4-9rw7-5326",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-w4v4-9rw7-5326"
},
{
"published_at": "2026-09-07",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-qqjf-53cj-pwvv",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-qqjf-53cj-pwvv"
},
{
"published_at": "2026-09-07",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-8fcf-v89g-xpg6",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-8fcf-v89g-xpg6"
}
]
}
CERTFR-2026-AVI-1088
Vulnerability from certfr_avis - Published: 2026-08-27 - Updated: 2026-08-27
De multiples vulnérabilités ont été découvertes dans Traefik. Elles permettent à un attaquant de provoquer un déni de service à distance et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Traefik versions v3.x ant\u00e9rieures \u00e0 v3.7.12",
"product": {
"name": "Traefik",
"vendor": {
"name": "Traefik",
"scada": false
}
}
},
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"description": "Traefik versions ant\u00e9rieures \u00e0 v2.11.56",
"product": {
"name": "Traefik",
"vendor": {
"name": "Traefik",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [],
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"last_revision_date": "2026-08-27T00:00:00",
"links": [],
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"revision_date": "2026-08-27T00:00:00.000000"
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],
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"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
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},
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"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-cjr6-pf59-jq29",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-cjr6-pf59-jq29"
},
{
"published_at": "2026-08-27",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-7ghq-v6jf-g56c",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-7ghq-v6jf-g56c"
}
]
}
CERTFR-2026-AVI-1070
Vulnerability from certfr_avis - Published: 2026-08-21 - Updated: 2026-08-21
De multiples vulnérabilités ont été découvertes dans Traefik. Certaines d'entre elles permettent à un attaquant de provoquer un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Traefik versions v3.x ant\u00e9rieures \u00e0 v3.7.11",
"product": {
"name": "Traefik",
"vendor": {
"name": "Traefik",
"scada": false
}
}
},
{
"description": "Traefik versions ant\u00e9rieures \u00e0 v2.11.55",
"product": {
"name": "Traefik",
"vendor": {
"name": "Traefik",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [],
"initial_release_date": "2026-08-21T00:00:00",
"last_revision_date": "2026-08-21T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1070",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-08-21T00:00:00.000000"
}
],
"risks": [
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Traefik. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Traefik",
"vendor_advisories": [
{
"published_at": "2026-08-21",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-g55h-rg46-x9c5",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-g55h-rg46-x9c5"
},
{
"published_at": "2026-08-21",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-5w68-77r2-r64c",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-5w68-77r2-r64c"
},
{
"published_at": "2026-08-21",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-m6wx-622r-48r9",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-m6wx-622r-48r9"
},
{
"published_at": "2026-08-21",
"title": "Bulletin de s\u00e9curit\u00e9 Traefik GHSA-j994-9gqj-9hwq",
"url": "https://github.com/traefik/traefik/security/advisories/GHSA-j994-9gqj-9hwq"
}
]
}