CVE-2026-34978

A flaw was found in OpenPrinting CUPS. A remote attacker can exploit a path traversal vulnerability in the RSS notifier by manipulating the notify-recipient-uri. This allows writing arbitrary RSS XML data to sensitive files outside the intended directory. This can lead to a denial of service (DoS) by corrupting critical system files, such as the job cache, causing the scheduler to fail and previously queued jobs to disappear.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.