Common Weakness Enumeration
CWE-755
DiscouragedImproper Handling of Exceptional Conditions
Abstraction: Class · Status: Incomplete
The product does not handle or incorrectly handles an exceptional condition.
709 vulnerabilities reference this CWE, most recent first.
CVE-2026-44325 (GCVE-0-2026-44325)
Vulnerability from cvelistv5 – Published: 2026-05-27 15:43 – Updated: 2026-05-27 17:50
VLAI
EPSS
VEX
Title
free5GC: NRF POST /oauth2/token structured-form parser type-confusion panic family (Reflect.Set on incompatible types)
Summary
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/api_accesstoken.go reflects over models.NrfAccessTokenAccessTokenReq, special-cases only plain string and NrfNfManagementNfType fields, and treats every other field as if it were a single models.PlmnId. The parsed *models.PlmnId is then assigned with reflect.Value.Set() to whichever field name the attacker put in the form body, which panics whenever the destination field's real type is incompatible (slice, different struct, primitive). Gin recovery converts each panic into HTTP 500, but the endpoint remains remotely panicable from a single unauthenticated form-encoded request and is repeatedly triggerable. This vulnerability is fixed in 4.2.2.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 17:50 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/918 | x_refsource_MISC |
| https://github.com/free5gc/nrf/pull/83 | x_refsource_MISC |
| https://github.com/free5gc/nrf/commit/f7bc77daa74… | x_refsource_MISC |
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CVE-2026-44319 (GCVE-0-2026-44319)
Vulnerability from cvelistv5 – Published: 2026-05-27 15:49 – Updated: 2026-05-28 14:15
VLAI
EPSS
VEX
Title
free5GC: NEF crashes via logger.Fatal on PFD notification delivery failure (attacker-controlled notifyUri)
Summary
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF terminates the entire process when a stored PFD-subscription notifyUri cannot be reached. In PfdChangeNotifier.FlushNotifications(), the notifier calls NnefPFDmanagementNotify(...) and on any delivery error invokes logger.PFDManageLog.Fatal(err), which is os.Exit(1)-equivalent in Go. An attacker who can create a PFD subscription with an attacker-chosen notifyUri and then trigger a PFD change can deterministically kill NEF on the asynchronous delivery attempt -- the process exits with status 1, dropping NEF's entire SBI surface until restart. This vulnerability is fixed in 4.2.2.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 14:15 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/924 | x_refsource_MISC |
| https://github.com/free5gc/nef/pull/25 | x_refsource_MISC |
| https://github.com/free5gc/nef/commit/f110517b118… | x_refsource_MISC |
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CVE-2026-42792 (GCVE-0-2026-42792)
Vulnerability from cvelistv5 – Published: 2026-07-27 14:58 – Updated: 2026-07-28 09:55
VLAI
EPSS
VEX
Title
epmd permanent DoS via EMFILE on accept(2) in erts
Summary
Improper Handling of Exceptional Conditions vulnerability in Erlang OTP erts (epmd) allows an unauthenticated remote attacker to permanently terminate the Erlang Port Mapper Daemon (epmd) via connection slot exhaustion.
The do_accept function in erts/epmd/src/epmd_srv.c calls epmd_cleanup_exit() when accept(2) returns EMFILE (per-process file descriptor limit reached) or ENFILE (system-wide file descriptor limit reached), rather than treating these as recoverable conditions. An attacker can exhaust epmd's file descriptor slots by holding many TCP connections open while periodically sending a single byte to reset the idle timeout, then causing accept(2) to return EMFILE, which kills the daemon. epmd has no per-source-IP connection cap, making the attack feasible from a single source.
On Debian/Ubuntu default packaging the impact is amplified: the systemd unit inherits a low file descriptor soft limit, and repeated daemon deaths trigger systemd's start-rate-limit, permanently failing both epmd.service and epmd.socket and requiring manual operator intervention to recover.
This issue affects OTP from OTP 17.0 before OTP 29.0.4, OTP 28.5.0.4 and OTP 27.3.4.15.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 17:25 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-42792.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-42792 | related |
| https://www.erlang.org/doc/system/versions.html#o… | x_version-scheme |
| https://github.com/erlang/otp/commit/865d203e4a6a… | patch |
Impacted products
2 products
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CVE-2026-42545 (GCVE-0-2026-42545)
Vulnerability from cvelistv5 – Published: 2026-05-12 21:51 – Updated: 2026-05-14 12:35
VLAI
EPSS
VEX
Title
Granian: DoS via WSGI response header panic
Summary
Granian is a Rust HTTP server for Python applications. From 0.2.0 to 2.7.4, Granian aborts a worker process if a WSGI application returns an invalid HTTP response header name or value. The WSGI response conversion path uses .unwrap() on both the header name and header value constructors, so malformed output from the application becomes a process abort instead of a handled error. This vulnerability is fixed in 2.7.4.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 12:35 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/emmett-framework/granian/secur… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| emmett-framework | granian |
Affected:
>= 0.2.0, < 2.7.4
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CVE-2026-40074 (GCVE-0-2026-40074)
Vulnerability from cvelistv5 – Published: 2026-04-10 16:26 – Updated: 2026-04-14 14:17
VLAI
EPSS
VEX
Title
SvelteKit's invalidated redirect in handle hook causes Denial-of-Service
Summary
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.57.1, redirect, when called from inside the handle server hook with a location parameter containing characters that are invalid in a HTTP header, will cause an unhandled TypeError. This could result in DoS on some platforms, especially if the location passed to redirect contains unsanitized user input. This vulnerability is fixed in 2.57.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-14 14:17 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/sveltejs/kit/security/advisori… | x_refsource_CONFIRM |
| https://github.com/sveltejs/kit/commit/10d7b44425… | x_refsource_MISC |
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CVE-2026-34065 (GCVE-0-2026-34065)
Vulnerability from cvelistv5 – Published: 2026-04-22 19:45 – Updated: 2026-04-23 14:17
VLAI
EPSS
VEX
Title
nimiq-primitives: Node crash due to missing interlink validation in election macro block proposals
Summary
nimiq-primitives contains primitives (e.g., block, account, transaction) to be used in Nimiq's Rust implementation. Prior to version 1.3.0, an untrusted p2p peer can cause a node to panic by announcing an election macro block whose `validators` set contains an invalid compressed BLS voting key. Hashing an election macro header hashes `validators` and reaches `Validators::voting_keys()`, which calls `validator.voting_key.uncompress().unwrap()` and panics on invalid bytes. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-23 14:16 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nimiq/core-rs-albatross/securi… | x_refsource_CONFIRM |
| https://github.com/nimiq/core-rs-albatross/pull/3662 | x_refsource_MISC |
| https://github.com/nimiq/core-rs-albatross/commit… | x_refsource_MISC |
| https://github.com/nimiq/core-rs-albatross/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nimiq | nimiq-primitives |
Affected:
< 1.3.0
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CVE-2026-30798 (GCVE-0-2026-30798)
Vulnerability from cvelistv5 – Published: 2026-03-05 15:38 – Updated: 2026-06-22 13:17
VLAI
EPSS
VEX
Title
RustDesk Client Accepts Unauthenticated stop-service Command via Strategy Payload
Summary
Insufficient Verification of Data Authenticity, Improper Handling of Exceptional Conditions vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Heartbeat sync loop, strategy processing modules) allows Protocol Manipulation.
This vulnerability is associated with program files src/hbbs_http/sync.Rs and program routines stop-service handler in heartbeat loop.
This issue affects RustDesk Client: through 1.4.8.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 14:32 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://rustdesk.com/docs/en/client/ | technical-descriptionx_--config documentation |
| https://docs.google.com/document/d/e/2PACX-1vSds6… | third-party-advisoryexploit |
| https://www.vulsec.org/ | vdb-entrythird-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| rustdesk-client | RustDesk Client |
Affected:
0 , ≤ 1.4.8
(custom)
cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:windows:*:*:*:*:* cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:macos:*:*:*:*:* cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:linux:*:*:*:*:* cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:ios:*:*:*:*:* cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:android:*:*:*:*:* |
Date Public
2026-03-05 13:45
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CVE-2026-28542 (GCVE-0-2026-28542)
Vulnerability from cvelistv5 – Published: 2026-03-05 08:29 – Updated: 2026-03-05 14:42
VLAI
EPSS
VEX
Summary
Permission bypass vulnerability in the system service framework. Impact: Successful exploitation of this vulnerability may affect availability.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-05 14:41 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
Impacted products
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CVE-2026-27809 (GCVE-0-2026-27809)
Vulnerability from cvelistv5 – Published: 2026-02-25 23:57 – Updated: 2026-02-26 15:17
VLAI
EPSS
VEX
Title
psd-tools: Compression module has unguarded zlib decompression, missing dimension validation, and hardening gaps
Summary
psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.12.2, when a PSD file contains malformed RLE-compressed image data (e.g. a literal run that extends past the expected row size), decode_rle() raises ValueError which propagated all the way to the user, crashing psd.composite() and psd-tools export. decompress() already had a fallback that replaces failed channels with black pixels when result is None, but it never triggered because the ValueError from decode_rle() was not caught. The fix in version 1.12.2 wraps the decode_rle() call in a try/except so the existing fallback handles the error gracefully.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 15:17 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/psd-tools/psd-tools/security/a… | x_refsource_CONFIRM |
| https://github.com/psd-tools/psd-tools/commit/6c0… | x_refsource_MISC |
| https://github.com/psd-tools/psd-tools/releases/t… | x_refsource_MISC |
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CVE-2026-27586 (GCVE-0-2026-27586)
Vulnerability from cvelistv5 – Published: 2026-02-24 16:08 – Updated: 2026-02-26 20:56
VLAI
EPSS
VEX
Title
Caddy's mTLS client authentication silently fails open when CA certificate file is missing or malformed
Summary
Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 20:55 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/caddyserver/caddy/security/adv… | x_refsource_CONFIRM |
| https://gist.github.com/moscowchill/9566c79c76c0b… | x_refsource_MISC |
| https://github.com/caddyserver/caddy/releases/tag… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| caddyserver | caddy |
Affected:
< 2.11.1
|
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"x_refsource_CONFIRM"
],
"url": "https://github.com/caddyserver/caddy/security/advisories/GHSA-hffm-g8v7-wrv7"
},
{
"name": "https://gist.github.com/moscowchill/9566c79c76c0b64c57f8bd0716f97c48",
"tags": [
"x_refsource_MISC"
],
"url": "https://gist.github.com/moscowchill/9566c79c76c0b64c57f8bd0716f97c48"
},
{
"name": "https://github.com/caddyserver/caddy/releases/tag/v2.11.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/caddyserver/caddy/releases/tag/v2.11.1"
}
],
"source": {
"advisory": "GHSA-hffm-g8v7-wrv7",
"discovery": "UNKNOWN"
},
"title": "Caddy\u0027s mTLS client authentication silently fails open when CA certificate file is missing or malformed"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-27586",
"datePublished": "2026-02-24T16:08:20.569Z",
"dateReserved": "2026-02-20T17:40:28.450Z",
"dateUpdated": "2026-02-26T20:56:20.526Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.