PT-2026-30238 · Openprinting · Cups

Published 2026-04-03 · Updated 2026-04-03 · CVE-2026-34980

NVD

CVSS v4.0

6.1

Medium

AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2026-34980

Affected Products

Cups

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-34980 · Security Note
• https://github.com/OpenPrinting/cups/security/advisories/GHSA-4852-v58g-6cwf · Note