CVE-2026-112891

UNKNOWN 0.0

Pillow: Quadratic GIF comment copying during save

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Pillow is a Python imaging library. From 9.2.0 until 13.0.0, Pillow performs quadratic copying when saving a GIF with a long comment. _get_global_header() repeatedly copies portions of comment data while assembling the global header, including comments retained from an untrusted input image. An attacker can supply an image with a large GIF comment to an application that saves it as GIF. This can consume excessive CPU and delay or deny service. This issue is fixed in version 13.0.0.

CWE	CWE-407
Vendor	python-pillow
Product	pillow
Published	Oct 19, 2026

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Affected Versions

python-pillow / Pillow

>= 9.2.0, < 13.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/python-pillow/Pillow/security/advisories/GHSA-fc9g-5qg7-mf45 github.com: https://github.com/python-pillow/Pillow/commit/68a3fe957d8a4d552e8c69d96066d749f0614c7e github.com: https://github.com/python-pillow/Pillow/releases/tag/13.0.0