Improper Certificate Validation Affecting OpenPrinting/cups package, versions [0, 2.4.17)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-OPENPRINTINGCUPS-15924821
- published7 Apr 2026
- disclosed3 Apr 2026
- creditAsim Viladi Oglu Manizada
Introduced: 3 Apr 2026
CVE-2026-34990 (opens in a new tab)How to fix?
Upgrade OpenPrinting/cups to version 2.4.17 or higher.
Overview
Affected versions of this package are vulnerable to Improper Certificate Validation in the cupsd when used with reusable Authorization: Local ... token. An attacker can gain elevated privileges and execute arbitrary commands as root by coercing the service to authenticate to an attacker-controlled Internet Printing Protocol (IPP) service, resulting in the creation of a persistent printer queue that overwrites arbitrary files with root privileges.