CVE-2026-112896: python pillow

CVSS 8.8 (high) · published 2026-10-19

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's TIFF encoder can read beyond a ColorMap buffer when retained TIFF metadata has a plane size inconsistent with BitsPerSample. A small TIFF can be opened normally and then retain a crafted ColorMap that is reused when the image is saved. An application that re-encodes the attacker's TIFF with libtiff can trigger the out-of-bounds read. This can disclose heap memory in the output or crash the process. This issue is fixed in version 13.0.0.

Affected products (NVD): python pillow

Fixed in (NVD): 13.0.0

Weakness: CWE-125

Source: NVD CVE-2026-112896

References

• https://github.com/python-pillow/Pillow/commit/d03dc3c587a9b0bdc9e4304d70d59a635a87b742
• https://github.com/python-pillow/Pillow/releases/tag/13.0.0
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-pchr-8j38-3x4p
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-pchr-8j38-3x4p

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