CVE-2026-34990
Description
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
22cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*range: <=2.4.16
- (no CPE)range: <=2.4.16
- osv-coords20 versionspkg:rpm/opensuse/cups&distro=openSUSE%20Tumbleweedpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP7pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/cups&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5
< 2.4.17-1.1+ 19 more
- (no CPE)range: < 2.4.17-1.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 1.7.5-20.62.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 2.2.7-150000.3.86.1
- (no CPE)range: < 1.7.5-20.62.1
Patches
Vulnerability mechanics
References
1- github.com/OpenPrinting/cups/security/advisories/GHSA-c54j-2vqw-wpwpnvdExploitVendor Advisory
News mentions
0No linked articles in our index yet.