BREW-BBOT-CVE-2026-12565 (CVE-2026-12565)

Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-09 23:43 – Source website
VLAI
Details

The unarchive internal module's archive extraction commands perform no code-level validation on extracted file paths, relying entirely on the behavior of external tools (e.g. GNU tar) which varies by platform. While CVE-2025-10284 addressed git-specific RCE vectors, the underlying archive extraction path traversal was never fixed. On systems with GNU tar < 1.34 (Ubuntu 20.04, Debian Buster, CentOS 7, many Docker base images), a malicious archive can write files outside the intended extraction directory.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "2.8.5"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "bbot",
        "purl": "pkg:brew/bbot"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "git",
    "upstream_evidence": [
      {
        "ecosystem": "GIT",
        "key": "https://github.com/blacklanternsecurity/bbot",
        "name": "https://github.com/blacklanternsecurity/bbot",
        "strategy": "git",
        "subject_version": "3.0.2"
      },
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/bbot@3.0.2",
        "name": "bbot",
        "strategy": "registry",
        "subject_version": "3.0.2"
      }
    ]
  },
  "details": "The unarchive internal module\u0027s archive extraction commands perform no code-level validation on extracted file paths, relying entirely on the behavior of external tools (e.g. GNU tar) which varies by platform. While CVE-2025-10284 addressed git-specific RCE vectors, the underlying archive extraction path traversal was never fixed. On systems with GNU tar \u003c 1.34 (Ubuntu 20.04, Debian Buster, CentOS 7, many Docker base images), a malicious archive can write files outside the intended extraction directory.",
  "id": "BREW-bbot-CVE-2026-12565",
  "modified": "2026-09-09T23:43:32Z",
  "published": "2026-08-13T16:37:10Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/blacklanternsecurity/bbot/commit/4fb38fd6e"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-12565",
    "GHSA-3vgw-585j-4m45",
    "PYSEC-2026-2392"
  ]
}



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