Vulnerability · Published Aug 13, 2026 · Assigned by Gitea
CVE-2026-55982OIDC userinfo Endpoint Returns Identity Claims Without Enforcing API Token Scopes
Critical 9.1
In plain English
A critical-severity information exposure in Gitea Open Source Git Server from Gitea. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.5%top 56.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
OIDC userinfo Endpoint Returns Identity Claims Without Enforcing API Token Scopes
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | code.gitea.io/gitea | 1.27.0 | GHSA-mg4f-x9v4-6h2p |
| Go | gitea.dev | 1.27.0 | GO-2026-6065 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Gitea | Gitea Open Source Git Server | 1.26.2 |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory vendor-advisory
- Gitea v1.27.0 Release release-notes
- Gitea v1.27.0 Release Blog Post release-notes