RHSA-2026:50070

Vulnerability from csaf_redhat - Published: 2026-08-04 12:45 - Updated: 2026-08-09 07:01
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: prometheus3.5: * prometheus3.5-3.5.5-0.7.hum1 (aarch64, x86_64) * prometheus3.5-3.5.5-0.7.hum1.src (src) Security Fix(es): prometheus3.5: * CVE-2026-69153
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-2026-69153

A flaw was found in PostCSS. A remote attacker can exploit this vulnerability by providing a specially crafted sourceMappingURL when a specific configuration (the 'from' parameter) is not set. This can cause the application to read and expose unintended source-map files, potentially revealing sensitive information about the application's source code.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:prometheus3-5-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:prometheus3-5-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:prometheus3-5-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
To clipboard 

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        "text": "This update includes the following RPMs:\n\nprometheus3.5:\n  * prometheus3.5-3.5.5-0.7.hum1 (aarch64, x86_64)\n  * prometheus3.5-3.5.5-0.7.hum1.src (src)\n\nSecurity Fix(es):\n\nprometheus3.5:\n  * CVE-2026-69153",
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-69153",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "discovery_date": "2026-08-03T18:01:01.506065+00:00",
      "ids": [
        {
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          "text": "2510719"
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      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in PostCSS. A remote attacker can exploit this vulnerability by providing a specially crafted sourceMappingURL when a specific configuration (the \u0027from\u0027 parameter) is not set. This can cause the application to read and expose unintended source-map files, potentially revealing sensitive information about the application\u0027s source code.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "postcss: PostCSS: Information disclosure via crafted sourceMappingURL",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat rates this flaw as Moderate because the information disclosed is limited to files with a .map extension. Source map files may contain source code paths and content, but the attacker cannot read arbitrary files on the system. Exploitation requires the application to process attacker-controlled CSS through PostCSS on the server side.",
          "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"
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510719"
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        {
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        {
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69153"
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        {
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          "summary": "https://github.com/postcss/postcss/commit/7beca139e70f9075c6b19700fcb00dd8033e5da8",
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        {
          "category": "external",
          "summary": "https://github.com/postcss/postcss/releases/tag/8.5.19",
          "url": "https://github.com/postcss/postcss/releases/tag/8.5.19"
        },
        {
          "category": "external",
          "summary": "https://github.com/postcss/postcss/security/advisories/GHSA-fxqj-rqcc-2cmp",
          "url": "https://github.com/postcss/postcss/security/advisories/GHSA-fxqj-rqcc-2cmp"
        }
      ],
      "release_date": "2026-08-03T16:56:25.733000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-04T12:45:07+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:prometheus3-5-main@aarch64",
            "Red Hat Hardened Images:prometheus3-5-main@src",
            "Red Hat Hardened Images:prometheus3-5-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:50070"
        },
        {
          "category": "workaround",
          "details": "Pass map: false when invoking PostCSS to disable source map auto-loading. This prevents the path traversal from being triggered, though it removes source map support entirely.",
          "product_ids": [
            "Red Hat Hardened Images:prometheus3-5-main@aarch64",
            "Red Hat Hardened Images:prometheus3-5-main@src",
            "Red Hat Hardened Images:prometheus3-5-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:prometheus3-5-main@aarch64",
            "Red Hat Hardened Images:prometheus3-5-main@src",
            "Red Hat Hardened Images:prometheus3-5-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "postcss: PostCSS: Information disclosure via crafted sourceMappingURL"
    }
  ]
}



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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

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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.