CVE-2026-59763 Unbounded Arch package file metadata can cause resource amplification in Gitea package uploads
Attackers can cause resource amplification and denial of service by uploading Arch packages with unbounded metadata to Gitea.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-59763?
CVE-2026-59763 is a medium-severity denial of service vulnerability in Gitea Open Source Git Server, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Unbounded Arch package file metadata can cause resource amplification in Gitea package uploads
Weakness: CWE-284
Which versions are affected by CVE-2026-59763?
3 open source packages ship an affected version, including code.gitea.io/gitea and gitea.dev.
| Package | Affected | Fixed in |
|---|---|---|
code.gitea.io/gitea Go | All versions | 1.27.0 |
code.gitea.io/gitea Go | All versions | 1.27.0 |
gitea.dev Go | All versions | 1.27.0 |
How do I fix CVE-2026-59763?
Upgrade code.gitea.io/gitea to 1.27.0 or later.
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-2026-59763 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59763 exists.
Sources
Also known as GHSA-9mq6-mqjj-c2c5, GO-2026-6049, MINI-jcxj-wcxw-f3v3, MINI-xg9g-jpq5-94hg.