CVE-2026-107888 Null dereference in CUPS
An unprivileged user can cause a denial of service in CUPS by triggering a NULL pointer dereference during temporary printer cleanup.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107888?
CVE-2026-107888 is a medium-severity vulnerability in OpenPrinting CUPS, published on 9 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2026-107888?
It affects 1 product.
Products include Openprinting Cups.
How do I fix CVE-2026-107888?
Upgrade to a fixed version.
Is CVE-2026-107888 being exploited?
There is no known exploitation of CVE-2026-107888 in the wild and no public exploit code.
Other vulnerabilities in OpenPrinting CUPS
- CVE-2025-58060 cups has Authentication bypass with AuthType Negotiate
- CVE-2026-34978 Path traversal in cups
- CVE-2025-58364 cups: Remote DoS via null dereference
- CVE-2026-34980 OpenPrinting CUPS: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network
- CVE-2025-61915 OpenPrinting CUPS vulnerable to stack based out-of-bound write
Sources
Also known as AZL-106890, BELL-CVE-2026-107888, DEBIAN-CVE-2026-107888, ECHO-dae6-2944-98b5, GHSA-95mw-jr52-2v5f, GHSA-qqm8-4q5h-jg55 and 1 more.