CVE-2026-41066: lxml: Default configuration of iterparse() and ETCompatXMLParser() allows XXE to local files
Overview
- Severity
- High (CVSS 7.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Apr
- Released
- 2026-04-26
- Last Updated
- 2026-05-06
- EPSS Score
- 0.06% (percentile: 19.0%)
Affected Products (3)
Open Source Software
- azl3 python-lxml 4.9.3-1 on Azure Linux 3.0
Mariner
- cbl2 python-lxml 4.9.1-1 on CBL Mariner 2.0
Other
Revision History
- 2026-04-26: Information published.
- 2026-04-27: Information published.
- 2026-04-29: Information published.
- 2026-05-06: Information published.
- 2026-05-06: Information published.