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.
INFO
Published Date :
2026-04-03T21:14:09.616Z
Last Modified :
2026-04-06T18:52:04.074Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-34990 vulnerability.
| Vendors | Products |
|---|---|
| Openprinting |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34990.
