CVE-2026-20883: Gitea Stopwatch API Missing Authorization Check Leads to Post-Revocation Information Disclosure

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-22 · updated 2026-06-17
Weakness: CWE-284

Description

Gitea's stopwatch API does not re-validate repository access permissions. After a user's access to a private repository is revoked, they may still view issue titles and repository names through previously started stopwatches.

Affected products

Gitea Open Source Git Server: before 1.25.4 — fixed in 1.25.4

How to fix

Upgrade to a fixed version: Gitea Open Source Git Server 1.25.4. Check the vendor advisory for mitigations.

References

https://blog.gitea.com/release-of-1.25.4/
https://github.com/go-gitea/gitea/pull/36340
https://github.com/go-gitea/gitea/pull/36368
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
https://github.com/go-gitea/gitea/security/advisories/GHSA-644v-xv3j-xgqg

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