CVE-2026-61702

CVE-2026-61702 · OpenPrinting CUPS: root-side banner file disclosure

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, copy_banner() in scheduler/ipp.c uses the attacker-controlled IPP attributes-natural-language value as a directory component beneath DataDir/banners when processing a job-sheets banner. The job-sheets value must first match a registered banner basename, and the traversed path must contain a matching reachable basename; selecting an arbitrary target as demonstrated additionally requires pre-positioned path state such as a symlink with that basename. Subject to the scheduler's filesystem and sandbox access, path separators in the language value can escape the intended banner directory, make the root scheduler open the reachable file, and copy its bytes into a job-sheet spool object that a configured backend can deliver to an attacker-observable endpoint. This issue is fixed in version 2.4.20.

CVSS 5.3 · Moyenne · EPSS 0,4%

Publication

2026-10-15T17:12:10.695Z

Mise à jour

2026-10-15T17:12:10.695Z

Pile logicielle: system

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