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      "text": "High"
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    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
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    "lang": "en",
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      {
        "category": "legal_disclaimer",
        "text": "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 Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
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      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
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        "url": "https://security.tuxcare.com/csaf/v2/els_os/tuxcare9.8esu/vex/2026/cve-2026-15789-els_os-tuxcare9_8esu.json"
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          "date": "2026-07-21T17:17:00Z",
          "number": "1",
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          "date": "2026-10-16T09:20:19Z",
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-15789",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"
      },
      "notes": [
        {
          "category": "description",
          "text": "A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentication, etc.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
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          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-15789"
        },
        {
          "category": "external",
          "summary": "https://github.com/moby/buildkit/security/advisories/GHSA-g2h8-426c-7976",
          "url": "https://github.com/moby/buildkit/security/advisories/GHSA-g2h8-426c-7976"
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      "release_date": "2026-07-21T17:17:00Z",
      "threats": [
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          "category": "impact",
          "details": "Important"
        },
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          "category": "impact",
          "date": "2026-10-15T15:22:36.469758Z",
          "details": "CVE-2026-15789 affects BuildKit, which is not part of the buildah package for TuxCare 9.8 ESU. The buildah package vendors only BuildKit's Dockerfile front-end parser and related helpers, not the daemon-side upload and solver code where the flaw resides, so the vulnerable code is not present.",
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