RHSA-2026:34526

Vulnerability from csaf_redhat - Published: 2026-07-01 20:42 - Updated: 2026-08-09 04:09
Summary
Red Hat Security Advisory: Technical preview of the satellite/iop-vmaas-rhel9 container image
Severity
Important
Notes
Topic: A new satellite/iop-vmaas-rhel9 container image is now available as a technical preview 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.
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.
CVE-2026-44431

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)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-201 - Insertion of Sensitive Information Into Sent Data
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Satellite 6.19:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_amd64 —
Vendor Fix fix
Threats
Impact Moderate
CVE-2026-44432

A flaw was found in urllib3, an HTTP client library for Python. This vulnerability allows a remote attacker to cause excessive resource consumption, such as high CPU usage and massive memory allocation, on the client side. This occurs when urllib3 attempts to decompress an entire HTTP response, even if only a partial read was requested, or when draining the connection after a partial decompression. This can lead to a Denial of Service (DoS) condition.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Satellite 6.19:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_amd64 —
Vendor Fix fix
Threats
Impact Important
CVE-2026-48710

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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Satellite 6.19:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Low
References
URL Category
https://access.redhat.com/errata/RHSA-2026:34526 self
https://access.redhat.com/documentation/en-us/red… external
https://access.redhat.com/security/cve/CVE-2026-44431 external
https://access.redhat.com/security/cve/CVE-2026-44432 external
https://access.redhat.com/security/cve/CVE-2026-48710 external
https://access.redhat.com/security/updates/classi… external
https://catalog.redhat.com/software/containers/search external
https://docs.redhat.com/en/documentation/red_hat_… external
https://docs.redhat.com/en/documentation/red_hat_… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-44431 self
https://bugzilla.redhat.com/show_bug.cgi?id=2477167 external
https://www.cve.org/CVERecord?id=CVE-2026-44431 external
https://nvd.nist.gov/vuln/detail/CVE-2026-44431 external
https://github.com/urllib3/urllib3/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-44432 self
https://bugzilla.redhat.com/show_bug.cgi?id=2477154 external
https://www.cve.org/CVERecord?id=CVE-2026-44432 external
https://nvd.nist.gov/vuln/detail/CVE-2026-44432 external
https://github.com/urllib3/urllib3/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-48710 self
https://bugzilla.redhat.com/show_bug.cgi?id=2481742 external
https://www.cve.org/CVERecord?id=CVE-2026-48710 external
https://nvd.nist.gov/vuln/detail/CVE-2026-48710 external
https://badhost.org external
https://github.com/Kludex/starlette/commit/764dab… external
https://github.com/Kludex/starlette/security/advi… external
https://github.com/pypa/advisory-database/tree/ma… external
https://ostif.org/disclosing-the-badhost-vulnerab… external
https://www.secwest.net/starlette external
https://www.x41-dsec.de/lab/advisories/x41-2026-0… external
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          "title": "Vulnerability description"
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        {
          "category": "other",
          "text": "The impact of this vulnerability is rated Moderate. A malformed Host header can manipulate the reconstructed request.url.path, introducing a discrepancy with the canonical ASGI request path (scope[\"path\"]). However, the vulnerability does not directly grant access, modify routing, or bypass security controls on its own. A path-based authentication or authorization bypass is possible only if an application depends on request.url.path for access control decisions rather than the canonical ASGI path or standard framework mechanisms. The impact relies heavily on downstream application design rather than a default library failure.\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 6.19:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_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": "2026-07-01T20:42:58+00:00",
          "details": "For Red Hat Lightspeed in Satellite installation see the Red Hat Satellite documentation.",
          "product_ids": [
            "Red Hat Satellite 6.19:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:34526"
        },
        {
          "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 6.19:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_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 6.19:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "starlette: Starlette: Security restriction bypass via malformed HTTP Host header"
    }
  ]
}



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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.


Detection rules are retrieved from Rulezet.