CVE-2026-112901

UNKNOWN 0.0

Pillow: ReDoS in XbmImagePlugin: 512-byte file stalls Image.open() for minutes

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's XBM header parser is vulnerable to regular-expression denial of service. In XbmImageFile._open, when an application calls Image.open() on a small crafted XBM file, XbmImagePlugin applies a backtracking expression to the attacker-controlled header before image dimensions are accepted, stalling a worker for minutes and denying service. This issue is fixed in version 13.0.0.

CWE	CWE-1333
Vendor	python-pillow
Product	pillow
Published	Oct 19, 2026

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Affected Versions

python-pillow / Pillow

< 13.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/python-pillow/Pillow/security/advisories/GHSA-xgh8-jp6q-p5x8 github.com: https://github.com/python-pillow/Pillow/commit/2852a3e3d568997ddec745fc800991f138878f4b github.com: https://github.com/python-pillow/Pillow/releases/tag/13.0.0