Vulnerability Description
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openprinting | Cups | <= 2.4.16 |
Related Weaknesses (CWE)
References
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-4852-v58g-6cwfExploitVendor Advisory
FAQ
What is CVE-2026-34980?
CVE-2026-34980 is a vulnerability with a CVSS score of 7.5 (HIGH). OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorize...
How severe is CVE-2026-34980?
CVE-2026-34980 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34980?
Check the references section above for vendor advisories and patch information. Affected products include: Openprinting Cups.