CVEvulnerability
CVE-2026-59197
8.2 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-07-14
- Last modified
- 2026-10-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- Weaknesses
- CWE-190, CWE-787
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.
Affected configurations
• python pillow (< 12.3.0)
Related
References
- https://github.com/python-pillow/Pillow/commit/cce3bdb867c77a3420261ed1bfdb6b0787ec8fc1 Patch
- https://github.com/python-pillow/Pillow/pull/9695 Issue Tracking, Patch
- 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 Exploit, Vendor Advisory
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr Exploit, Vendor Advisory