CVE-2026-39316: OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions…
CVE-2026-39316 · Severity: medium · CVSS 4 · Published 2026-04-07
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap grooming, this can be leveraged for code execution.
No. Junglewise Threat Intelligence has no report of CVE-2026-39316 being exploited in the wild.
How severe is CVE-2026-39316?
Medium severity, with a CVSS score of 4, published 7 April 2026.
Which products and versions are affected?
OpenPrinting Cups. The advisory does not name versions.
Is there a fix for CVE-2026-39316?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-39316?
Check whether you run OpenPrinting Cups. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.