VDB
CVE-2026-112901
CVE-2026-112901
PUBLISHED
CVSS 6.9 MEDIUM
Reported by GitHub_M · Published October 19, 2026
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.
Risk Scores
CVSS 4.0
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| python-pillow | Pillow | < 13.0.0 |
| chainguard | superset-fips-6.1 | 0 |
| chainguard | open-webui | 0 |
| chainguard | nemo-rl-cuda-13.0 | 0 |
| python-pillow | Pillow | 0 |
| wolfi | open-webui | 0 |
| chainguard | apache-beam-python-3.12-sdk | 0 |
| chainguard | py3-pillow | 0 |
| wolfi | py3-pillow | 0 |
| chainguard | py3-pytorch-cuda-13.0 | 0 |
| chainguard | openstack-horizon-2025.2 | 0 |
| PyPI | Pillow | 0 |
| chainguard | nemo-gym | 0 |
Timeline
- Oct 19, 2026 CVE Published
- Oct 20, 2026 EPSS Score
- Oct 20, 2026 Coalition ESS Score
- Oct 20, 2026 CVE Updated
- Oct 21, 2026 EPSS Score
- Oct 24, 2026 EPSS Score
- Oct 25, 2026 EPSS Score
- Oct 27, 2026 EPSS Score
- Oct 29, 2026 EPSS Score
- Oct 30, 2026 Security Advisory
- Oct 31, 2026 EPSS Score
References
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-xgh8-jp6q-p5x8 x_refsource_CONFIRM
- https://github.com/python-pillow/Pillow/commit/2852a3e3d568997ddec745fc800991f138878f4b x_refsource_MISC
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-112901 advisory
- https://github.com/advisories/GHSA-xgh8-jp6q-p5x8 advisory