9.1
Critical
CVE-2026-26247 Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization,…
Description
Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Gitea Open Source Git Server 1.25 | earliest → < 1.25.5 | 1.25.5 |
References
- GitHub Pull Request #36462 github.com
- GitHub Pull Request #36477 github.com
- Gitea v1.25.5 Release github.com
- Gitea v1.25.5 Release Blog Post blog.gitea.com
Timeline
- Published
- Last modified
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