PT-2026-30238 · Openprinting · Cups

Manizada · Published 2026-04-01 · Updated 2026-04-25 · CVE-2026-34980

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions CUPS versions 2.4.16 and prior

Description A flaw exists in the CUPS printing system's cupsd daemon due to insufficient input validation when processing the textWithoutLanguage parameter. Successful exploitation allows a remote attacker to execute arbitrary code by sending a specially crafted PostScript file to a shared print queue via a Print-Job request. The server accepts a page-border value, 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 subsequent raw print job can then cause the server to execute an attacker-chosen binary as lp.

Recommendations Update to a version later than 2.4.16.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-04785

CVE-2026-34980

ECHO-CFCA-06F8-1E75

OESA-2026-1932

OESA-2026-1933

OESA-2026-2018

OESA-2026-2019

OESA-2026-2020

OESA-2026-2021

OPENSUSE-SU-2026:10589-1

RHSA-2026:8814

SUSE-SU-2026:1617-1

Affected Products

Cups

References · 55

• https://github.com/OpenPrinting/cups/security/advisories/GHSA-4852-v58g-6cwf · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2026-34980 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-1933 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2020 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34978 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-34979 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2026-34980 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-34980 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2018 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34990 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-39316 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2021 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2019 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-34980 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10589-1 · Vendor Advisory