CVE-2026-41080: libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.
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-Apr
- Released
- 2026-04-18
- Last Updated
- 2026-06-02
- EPSS Score
- 0.01% (percentile: 2.1%)
Affected Products (7)
Open Source Software
- cbl2 expat 2.6.4-4 on CBL Mariner 2.0
- azl3 python3 3.12.9-10 on Azure Linux 3.0
- azl3 expat 2.6.4-5 on Azure Linux 3.0
- azl3 expat 2.6.4-6 on Azure Linux 3.0
- cbl2 cmake 3.21.4-23 on CBL Mariner 2.0
- cbl2 python3 3.9.19-19 on CBL Mariner 2.0
Other
Revision History
- 2026-04-18: Information published.
- 2026-04-25: Information published.
- 2026-04-29: Information published.
- 2026-05-01: Information published.
- 2026-05-02: Information published.
- 2026-05-19: Information published.
- 2026-06-02: Information published.