RHSA-2026:26226
Vulnerability from csaf_redhat - Published: 2026-06-16 09:06 - Updated: 2026-06-16 22:00Summary
Red Hat Security Advisory: General availability of the satellite/iop-host-inventory-rhel9 container image
Severity
Important
Notes
Topic: A new satellite/iop-host-inventory-rhel9 container image is now generally available in the Red Hat container registry.
Details: Red Hat Lightspeed in Satellite analyzes system health and configuration by applying predefined rules to a small set of local data, such as installed packages, running services, and configuration settings. When you install Red Hat Lightspeed in Satellite locally, you can generate Red Hat Lightspeed recommendations without sending system data to Red Hat services.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in python-dotenv. A local attacker can exploit this by crafting a symbolic link, which the `set_key()` and `unset_key()` functions in python-dotenv follow when rewriting `.env` files. This can lead to the overwriting of arbitrary files on the system.
7.1 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A missing verification step has been discovered in PyJWT. PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC.
7.5 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in urllib3, an HTTP client library for Python. When using the low-level API via `ProxyManager.connection_from_url().urlopen()` with `assert_same_host=False`, cross-origin redirects can still forward sensitive headers. This could allow a remote attacker to gain unauthorized access to sensitive information.
5.9 (Medium)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in Starlette, a lightweight ASGI (Asynchronous Server Gateway Interface) framework. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP `Host` request header. This malformed header could cause the `request.url` to be incorrectly reconstructed, leading to a discrepancy with the actual requested path. Consequently, security restrictions enforced by middleware and endpoints that rely on `request.url` for validation could be bypassed, potentially allowing unauthorized access or actions.
6.5 (Medium)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Low
References
39 references
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"details": "For Red Hat Lightspeed in Satellite installation see the Red Hat Satellite documentation.",
"product_ids": [
"Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:26226"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers"
},
{
"cve": "CVE-2026-48710",
"cwe": {
"id": "CWE-1289",
"name": "Improper Validation of Unsafe Equivalence in Input"
},
"discovery_date": "2026-05-26T23:01:03.204374+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2481742"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Starlette, a lightweight ASGI (Asynchronous Server Gateway Interface) framework. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP `Host` request header. This malformed header could cause the `request.url` to be incorrectly reconstructed, leading to a discrepancy with the actual requested path. Consequently, security restrictions enforced by middleware and endpoints that rely on `request.url` for validation could be bypassed, potentially allowing unauthorized access or actions.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "starlette: Starlette: Security restriction bypass via malformed HTTP Host header",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The impact is rated as Critical because path-based authentication and access control middleware can be completely bypassed by an unauthenticated remote attacker using a crafted HTTP Host header.\n\nStarlette reconstructs `request.url` by combining the HTTP Host header value with the request path, but performs no validation on the Host header. An attacker can inject path separators or query characters into the Host header (e.g., `Host: example.com/health?x=`), causing `request.url.path` to return a value that differs from the actual HTTP `request path` used for routing. Middleware that enforces authentication or authorization decisions based on `request.url.path` will evaluate the injected path rather than the real one, allowing the attacker to reach protected endpoints.\n\nWith regard to CVSS metrics, the Attack Vector (AV) is Network and Privileges Required (PR) is None, because the attack requires only the ability to send HTTP requests with a crafted Host header. User interaction is not required.\n\nRed Hat Satellite / Insights (IoP): The starlette package is included as a dependency of Connexion, but this flaw is rated Low impact because these services do not use path-based authentication middleware and all services are deployed behind reverse proxies. \n\nOpenShift Lightspeed (OLS): The starlette package is included as a dependency, but this flaw is rated Low impact because authentication is enforced via Kubernetes TokenReview/SubjectAccessReview through FastAPI dependency injection, not path-based middleware; request.url.path is only used for metrics and response header application.\n\nRHOAI Kubeflow Training images: starlette is being used as indirect dependency of mlflow, but this flaw is rated as Low impact because mlflow is used as client library only to store training metrics on remote server, it doesn\u0027t expose any endpoint.\n\nRHOAI odh-automl: The impact is reduced to Low since starlette is only used in the backend and it\u0027s transient dependency and starlette is not used at all to serve any endpoints.\n\nRHOAI odh-kserve-autogluon-server-rhel9: While the Starlette dependency is present in the build, the vulnerable code in starlette is not reachable. This reduces the impact to low.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-48710"
},
{
"category": "external",
"summary": "RHBZ#2481742",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481742"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-48710",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-48710"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-48710",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48710"
},
{
"category": "external",
"summary": "https://badhost.org",
"url": "https://badhost.org"
},
{
"category": "external",
"summary": "https://github.com/Kludex/starlette/commit/764dab0dcfb9033d75442d7a359645c9f94648c6",
"url": "https://github.com/Kludex/starlette/commit/764dab0dcfb9033d75442d7a359645c9f94648c6"
},
{
"category": "external",
"summary": "https://github.com/Kludex/starlette/security/advisories/GHSA-86qp-5c8j-p5mr",
"url": "https://github.com/Kludex/starlette/security/advisories/GHSA-86qp-5c8j-p5mr"
},
{
"category": "external",
"summary": "https://github.com/pypa/advisory-database/tree/main/vulns/starlette/PYSEC-2026-161.yaml",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/starlette/PYSEC-2026-161.yaml"
},
{
"category": "external",
"summary": "https://ostif.org/disclosing-the-badhost-vulnerability-in-starlette",
"url": "https://ostif.org/disclosing-the-badhost-vulnerability-in-starlette"
},
{
"category": "external",
"summary": "https://www.secwest.net/starlette",
"url": "https://www.secwest.net/starlette"
},
{
"category": "external",
"summary": "https://www.x41-dsec.de/lab/advisories/x41-2026-002-starlette",
"url": "https://www.x41-dsec.de/lab/advisories/x41-2026-002-starlette"
}
],
"release_date": "2026-05-26T21:54:54.393000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-16T09:06:21+00:00",
"details": "For Red Hat Lightspeed in Satellite installation see the Red Hat Satellite documentation.",
"product_ids": [
"Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:26226"
},
{
"category": "workaround",
"details": "Deploying an RFC-compliant reverse proxy (such as nginx, Apache, HAProxy, or Caddy) in front of the ASGI server will reject malformed Host headers before they reach the application. This is the most straightforward mitigation that does not require code changes.\n\nIf custom middleware is present, it should be updated to use `request.scope[\"path\"]` instead of `request.url.path` for any security decisions. The ASGI scope path is derived from the HTTP request line and is not influenced by the Host header, so it reflects the actual request target.",
"product_ids": [
"Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-host-inventory-rhel9@sha256:fe7bad4091d1e22b940b6f5cda351b4f0e92c0ff6107cf38041c5371ecef817a_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "starlette: Starlette: Security restriction bypass via malformed HTTP Host header"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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