CVE-2026-45186: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.
Overview
- Severity
- Low (CVSS 2.9)
- CVSS Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-May
- Released
- 2026-05-11
- Last Updated
- 2026-05-19
- EPSS Score
- 0.31% (percentile: 22.8%)
Affected Products (3)
Open Source Software
- azl3 cmake 3.30.3-13 on Azure Linux 3.0
- azl3 python3 3.12.9-10 on Azure Linux 3.0
- azl3 expat 2.6.4-6 on Azure Linux 3.0
Revision History
- 2026-05-11: Information published.
- 2026-05-11: Information published.
- 2026-05-13: Information published.
- 2026-05-19: Information published.