CVE-2026-60021 Gitea GitLab migration denial of service
An authenticated user can cause a denial of service in Gitea by initiating a GitLab migration against a malicious server that hangs, exhausting worker resources.
- 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-2026-60021?
CVE-2026-60021 is a medium-severity denial of service vulnerability in Gitea, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Gitea's initial GitLab migration version probe uses an HTTP client without a timeout and does not attach the migration task's cancellation context. An authenticated user who can start migrations can target an attacker-controlled server that keeps the response open indefinitely. The request continues after task cancellation and can exhaust the migration worker pool, preventing other migrations from progressing.
Weakness: CWE-400
Which versions are affected by CVE-2026-60021?
How do I fix CVE-2026-60021?
No fix has been published for CVE-2026-60021 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-2026-60021 being exploited?
There is no known exploitation of CVE-2026-60021 in the wild and no public exploit code.
Sources
Also known as GHSA-5952-x23q-p23f.