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

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-05

EPSS Score

0.06% (percentile: 18.3%)

Affected Products (1)

Other

• 20737-17084

Revision History

• 2026-04-05: Information published.