CVE-2026-107885 Denial of service in CUPS
An attacker can exhaust print job resources by holding incomplete connections, preventing legitimate print submissions from being processed.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107885?
CVE-2026-107885 is a low-severity denial of service 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 through 2.4.20 contains a resource-exhaustion vulnerability in the submission-timeout handling of cupsdCheckJobs(). The scheduler suppresses timeout processing for all pending jobs whenever any client connection has an in-flight Send-Document operation, without matching that connection to the job being examined. A client allowed to reach the IPP service can hold an incomplete HTTP request containing parsed Send-Document headers before operation authorization, preventing unrelated incomplete jobs from expiring. Where Create-Job submission is allowed, incomplete jobs can accumulate until MaxJobs is exhausted and further legitimate print submissions are rejected. The suppression ends when the held connection closes.
Weakness: CWE-770
Which versions are affected by CVE-2026-107885?
It affects 1 product.
Products include Openprinting Cups.
How do I fix CVE-2026-107885?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-107885 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107885 exists.
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-106887, BELL-CVE-2026-107885, CLSA-2026-1791832189, CLSA-2026-1791870722, CLSA-2026-1791916765, CLSA-2026-1791916787 and 7 more.