PT-2026-30239 · Cups · Cups

Manizada · Published 2026-04-01 · Updated 2026-04-25 · CVE-2026-34990

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description OpenPrinting CUPS is a printing system for Linux and Unix-like operating systems. A local unprivileged user can manipulate cupsd into authenticating to an attacker-controlled localhost IPP service using a reusable Authorization: Local token. This token allows the attacker to make /admin/ requests on localhost and combine CUPS-Create-Local-Printer with printer-is-shared=true to create a file:///... queue, bypassing FileDevice policy restrictions. Printing to this queue can lead to arbitrary root file overwrites, potentially enabling root command execution through techniques like dropping a sudoers fragment.

Recommendations Versions prior to 2.4.16 are affected. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

BDU:2026-04786

CVE-2026-34990

ECHO-F586-616E-6B78

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-2026:1399-1

SUSE-SU-2026:1617-1

Affected Products

Cups

References · 57

• https://github.com/OpenPrinting/cups/security/advisories/GHSA-c54j-2vqw-wpwp · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-34990 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-34990 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-1933 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-34990 · Security Note
• 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/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/BELL-CVE-2026-34990 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-27447 · Security Note