CVE-2026-34978: OpenPrinting CUPS: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (and clobbering of job.cache)
Overview
- Severity
- Medium (CVSS 6.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Apr
- Released
- 2026-04-05
- Last Updated
- 2026-04-30
- EPSS Score
- 0.11% (percentile: 29.2%)
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.
- 2026-04-09: Information published.
- 2026-04-18: Information published.
- 2026-04-30: Information published.