CVE-2026-59197

Description

Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.

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Produits concernés

• python-pillow Pillow
• Python pillow

Scores CVSS

Faiblesses (CWE)

• CWE-190
• CWE-787

Références

• https://github.com/python-pillow/Pillow/commit/cce3bdb867c77a3420261ed1bfdb6b0787ec8fc1 Patch
• https://github.com/python-pillow/Pillow/pull/9695 Issue TrackingPatch
• https://github.com/python-pillow/Pillow/releases/tag/12.3.0 Release Notes
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr ExploitVendor Advisory
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories