What is CVE-2026-34978?

CVE-2026-34978 is a medium-severity vulnerability in Openprinting Cups, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-04-03.

How severe is CVE-2026-34978?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in Openprinting Cups

CVE-2026-34978

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a rem…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (9.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

Affected products

Openprinting Cups — versions <= 2.4.16

Weakness classification (CWE)

CWE-22 — Path Traversal

References

https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-34978?: CVE-2026-34978 is a medium-severity vulnerability in Openprinting Cups, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-04-03.
How severe is CVE-2026-34978?: Medium severity. CVSS v3 base score is 6.5 out of 10.