MEDIUM 6.9 NVD
CVE-2026-112901
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, wh
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.
References
- https://github.com/python-pillow/Pillow/commit/2852a3e3d568997ddec745fc800991f138878f4b
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-xgh8-jp6q-p5x8
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-10-19 via NVD.
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