CVE-2026-112392

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage; ImagingRankFilter is never reached. An attacker can supply or cause creation of a zero-size image to an application that applies a rank, median, minimum, or maximum filter. This causes a native process crash. This issue is fixed in version 13.0.0.

Score

CVSS 4.0 8.2 High

Status

Analyzed - security-advisories@github.com

Published

2026-10-19

Last modified

2026-10-26

Weaknesses

CWE-476

Affected products

• Pillow (Python)
• Pillow (Python-pillow)

References

• https://github.com/python-pillow/Pillow/security/advisories/GHSA-27h8-gf7j-v5hc
• https://github.com/python-pillow/Pillow/commit/443e3130a8c11594fd0e296afad497e11e678961
• https://github.com/python-pillow/Pillow/releases/tag/13.0.0