NULL pointer dereference in Openprinting Cups
CVE-2026-107888
OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference in cupsdCheckJobs() when a job marked job-held-on-create refers to a temporary printer that has been automatically deleted. Temporary-printer cleanup can remove the destination without canceling its held jobs, and the scheduler dereferences the NULL result of cupsdFindDest() while checking holding_new_jobs. This terminates cupsd and interrupts all queues managed by that process. In some plausible scenarios, an unprivileged submission can trigger this.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/OpenPrinting/cups/security/advisories/GHSA-qqm8-4q5h-jg55 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-107888?
- CVE-2026-107888 is a medium-severity vulnerability in Openprinting Cups, classified under NULL Pointer Dereference. CVSS score: 5.1/10. Published 2026-10-09.
- How severe is CVE-2026-107888?
- Medium severity. CVSS v3 base score is 5.1 out of 10.