← CVE Radar
CVE-2026-112901Pillow: ReDoS in XbmImagePlugin: 512-byte file stalls Image.open() for minutes
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.
6.9 MEDIUMEPSS 0.53%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 6.9 | MEDIUM | 4.0GitHub_M (CNA) | 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 |
| 7.5 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Details
- CVE ID
- CVE-2026-112901
- Status
- Analyzed
- Assigner (CNA)
- GitHub_M
- Published
- Oct 19, 2026
- Last modified
- 2026-10-27 14:54 UTC
- Weaknesses
- CWE-1333 · Inefficient Regular Expression Complexity
Affected Products
As published by the CNA in the CVE record.
python-pillowPillow1 version range
- < 13.0.0