CVE-2026-34990
Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-287
Autenticación incorrecta
Fecha de publicación:
03/04/2026
Última modificación:
16/04/2026
Descripción
*** Pendiente de traducción *** 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.
Impacto
Puntuación base 4.0
5.00
Gravedad 4.0
MEDIA
Puntuación base 3.x
7.80
Gravedad 3.x
ALTA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:* | 2.4.16 (incluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página



