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brew-aider-cve-2021-25291
Vulnerability from osv_homebrew
Published
2026-08-13 16:35
Modified
2026-09-09 23:40
Summary
Out of bounds read in Pillow
Details

An issue was discovered in Pillow before 8.2.0. In TiffDecode.c, there is an out-of-bounds read in TiffreadRGBATile via invalid tile boundaries.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "resource": "pillow",
        "resource_purl": "pkg:pypi/pillow@12.1.1",
        "upstream_fixed_in": "8.2.0"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "aider",
        "purl": "pkg:brew/aider"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.86.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/pillow@12.1.1",
        "name": "pillow",
        "resource": "pillow",
        "strategy": "registry",
        "subject_version": "12.1.1"
      }
    ]
  },
  "details": "An issue was discovered in Pillow before 8.2.0. In `TiffDecode.c`, there is an out-of-bounds read in `TiffreadRGBATile` via invalid tile boundaries.",
  "id": "BREW-aider-CVE-2021-25291",
  "modified": "2026-09-09T23:40:56Z",
  "published": "2026-08-13T16:35:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25291"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-pillow/Pillow/commit/8b8076bdcb3815be0ef0d279651d8d1342b8ea61"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-pillow/Pillow/commit/cbdce6c5d054fccaf4af34b47f212355c64ace7a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-mvg9-xffr-p774"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-37.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python-pillow/Pillow"
    },
    {
      "type": "WEB",
      "url": "https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202107-33"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Out of bounds read in Pillow",
  "upstream": [
    "GHSA-mvg9-xffr-p774",
    "BIT-pillow-2021-25291",
    "CVE-2021-25291",
    "PYSEC-2021-37"
  ]
}



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