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  5. CVE-2026-96641

CVE-2026-96641: Pillow: Reachable undefined behavior in native integer operations, potentially leading to denial of service or logic integrity compromise

October 22, 2026

Affected Object and Source

Package: Pillow 12.3.0 Source: PyPI sdist pillow-12.3.0.tar.gz SHA-256: 3b8182a766685eaa002637e28b4ec8d6b18819a0c71f579bf0dbaa5830297cce Sink: src/_imaging.c:2809:15, xsize += dx

References

  • github.com/advisories/GHSA-4rm8-3hmm-39fg
  • github.com/python-pillow/Pillow/commit/80de4be9e38d3a6148dd4d8491eb80cd12b760a4
  • github.com/python-pillow/Pillow/pull/10010
  • github.com/python-pillow/Pillow/releases/tag/13.0.0
  • github.com/python-pillow/Pillow/security/advisories/GHSA-4rm8-3hmm-39fg
  • nvd.nist.gov/vuln/detail/CVE-2026-96641

Code Behaviors & Features

Detect and mitigate CVE-2026-96641 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions before 13.0.0

Fixed versions

  • 13.0.0

Solution

Upgrade to version 13.0.0 or above.

Impact 6.5 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-190: Integer Overflow or Wraparound

Source file

pypi/Pillow/CVE-2026-96641.yml

Spotted a mistake? Edit the file on GitLab.

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