Quick answers
- Is CVE-2026-55982 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-55982 being exploited in the wild.
- How severe is CVE-2026-55982?
- Medium severity, with a CVSS score of 4, published 21 July 2026.
- Which products and versions are affected?
- Gitea < 1.27.0; code.gitea.io/gitea (Go) < 1.27.0, SEMVER:introduced=0,fixed=1.27.0; gitea.dev (Go) SEMVER:introduced=0,fixed=1.27.0.
- Is there a fix for CVE-2026-55982?
- Yes. code.gitea.io/gitea (Go): upgrade to 1.27.0 or later; gitea.dev (Go): upgrade to 1.27.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-55982 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-55982?
- Check whether you run Gitea, code.gitea.io/gitea (Go) or gitea.dev (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- code.gitea.io/gitea (Go): upgrade to 1.27.0 or later
go get code.gitea.io/gitea@v1.27.0 - gitea.dev (Go): upgrade to 1.27.0 or later
go get gitea.dev@v1.27.0
Technical details
Gitea's OIDC userinfo endpoint (`GET /login/oauth/userinfo`) accepts Gitea API tokens as bearer credentials but fails to validate the assigned scopes before returning identity claims. While standard REST API endpoints correctly enforce scopes (e.g., requiring `read:user` for profile data), this endpoint allows tokens with minimal scopes like `read:misc` to retrieve sensitive claims including `email` and `groups` (organization/team memberships). An attacker must possess a valid, albeit restricted, personal access token to exploit this. The vulnerability is addressed in Gitea version 1.27.0.
Affected products
- Gitea Gitea < 1.27.0
Identifiers
- CVE-2026-55982
- GHSA-mg4f-x9v4-6h2p
- GO-2026-6065
Timeline
- 2026-07-13: disclosed: Initial publication by bircni
- 2026-07-21: advisory: GitHub Advisory published
- 2026-07-21: patched: Fix released in version 1.27.0