CVE-2026-34980

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/OpenPrinting/cups/security/advisories/GHSA-4852-v58g-6cwf	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*

History

16 Apr 2026, 18:28

Type	Values Removed	Values Added
First Time		Openprinting cups Openprinting
CPE		cpe:2.3:a:openprinting:cups::::::::
References	~~() https://github.com/OpenPrinting/cups/security/advisories/GHSA-4852-v58g-6cwf -~~	() https://github.com/OpenPrinting/cups/security/advisories/GHSA-4852-v58g-6cwf - Exploit, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

03 Apr 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-03 22:16

Updated : 2026-04-16 18:28

NVD link : CVE-2026-34980

Mitre link : CVE-2026-34980

CVE.ORG link : CVE-2026-34980

JSON object : View

Products Affected

openprinting

cups

CWE

CWE-20

Improper Input Validation

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