CVE-2026-27447: OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup
Overview
- Severity
- Medium (CVSS 4.8)
- CVSS Vector
- CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N/E:P
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Apr
- Released
- 2026-04-05
- Last Updated
- 2026-04-18
- EPSS Score
- 0.01% (percentile: 2.7%)
Affected Products (2)
Open Source Software
- azl3 cups 2.4.16-1 on Azure Linux 3.0
- cbl2 cups 2.3.3op2-11 on CBL Mariner 2.0
Revision History
- 2026-04-05: Information published.
- 2026-04-07: Information published.
- 2026-04-07: Information published.
- 2026-04-18: Information published.