CVE-2026-34980
Severity CVSS v4.0:
MEDIUM
Type:
CWE-20
Input Validation
Publication date:
03/04/2026
Last modified:
16/04/2026
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.
Impact
Base Score 4.0
6.10
Severity 4.0
MEDIUM
Base Score 3.x
7.50
Severity 3.x
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:* | 2.4.16 (including) |
To consult the complete list of CPE names with products and versions, see this page