# CVE-2026-55982: Gitea OIDC userinfo scope bypass allows identity disclosure

Source: https://junglewise.ai/threats/cve-2026-55982-gitea-oidc-userinfo-scope-bypass-allows-identity-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-21. Updated: 2026-07-21  
License: CC BY 4.0 with a link back

CVE-2026-55982 · Severity: medium · CVSS 4 · Published 2026-07-21

Gitea, a self-hosted Git service, contains a vulnerability where restricted access tokens can bypass security boundaries to view sensitive user information. An attacker with a low-privilege token—intended only for minor tasks—can use a specific identity endpoint to see a user's email address and organizational memberships. While this does not allow access to source code or administrative settings, it results in the unauthorized disclosure of personal identity data.

Technologies: [Gitea](https://junglewise.ai/threats/technologies/gitea), [code.gitea.io/gitea (Go)](https://junglewise.ai/threats/technologies/code-gitea-io-gitea), [gitea.dev (Go)](https://junglewise.ai/threats/technologies/gitea-dev). Vendors: [Gitea](https://junglewise.ai/threats/vendors/gitea), [Go](https://junglewise.ai/threats/vendors/go).

## 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

  ```sh
  go get code.gitea.io/gitea@v1.27.0
  ```

- gitea.dev (Go): upgrade to 1.27.0 or later

  ```sh
  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

## References

- [https://api.github.com/users/ybsun0215](https://api.github.com/users/ybsun0215)
- [https://github.com/ybsun0215](https://github.com/ybsun0215)
- [https://api.github.com/users/ybsun0215/gists%7B/gist_id%7D](https://api.github.com/users/ybsun0215/gists%7B/gist_id%7D)
- [https://api.github.com/users/ybsun0215/repos](https://api.github.com/users/ybsun0215/repos)
- [https://avatars.githubusercontent.com/u/48913347?v=4](https://avatars.githubusercontent.com/u/48913347?v=4)
- [https://api.github.com/users/ybsun0215/events%7B/privacy%7D](https://api.github.com/users/ybsun0215/events%7B/privacy%7D)

## Related threats

- [Gitea account takeover via OAuth2 auto-linking](https://junglewise.ai/threats/cve-2026-120263-when-oauth2-client-account-linking-is-set-to-auto-not-the)
- [Gitea limited-visibility profile disclosure via public-only token](https://junglewise.ai/threats/cve-2026-119627-the-web-profile-and-rss-atom-feed-routes-of-users-and)
- [Gitea token scope bypass in web routes](https://junglewise.ai/threats/cve-2026-119625-the-username-web-route-accepted-personal-access-tokens-over-http)
- [Gitea project boards information disclosure of private pull requests](https://junglewise.ai/threats/cve-2026-119533-repository-and-organization-project-boards-listed-the-pull)
- [Gitea API token scope bypass in repository deletion](https://junglewise.ai/threats/cve-2026-119441-delete-api-v1-orgs-org-repos-deletes-all-repositories-of-an)