CVE-2026-105964 Gitea Actions artifact v4 API unbounded request body
An attacker with a runner token can exhaust server memory via oversized artifact requests, crashing Gitea. Administrators should apply the patch.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-105964?
CVE-2026-105964 is a medium-severity denial of service vulnerability in Gitea, published on 18 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Gitea Actions artifact v4 (Twirp) handlers read the whole request body into memory without a size limit. A user who can run a workflow and obtains the runner token of that run could send an oversized request to the artifact service and exhaust the memory of the server, which terminates the Gitea process. The request body is now limited to 1 MiB.
Weakness: CWE-770
Which versions are affected by CVE-2026-105964?
How do I fix CVE-2026-105964?
No fix has been published for CVE-2026-105964 yet. Limit exposure of the affected software until one is available.
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-2026-105964 being exploited?
There is no known exploitation of CVE-2026-105964 in the wild and no public exploit code.
Sources
Also known as GHSA-6f9g-7jgm-m5ph.