CVE-2026-26247
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Gitea | Gitea Open Source Git Server | 0 < 1.25.5 | affected |
Weaknesses
- CWE-284: CWE-284
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: total
References
- https://github.com/go-gitea/gitea/pull/36462
- https://github.com/go-gitea/gitea/pull/36477
- https://github.com/go-gitea/gitea/releases/tag/v1.25.5
- https://blog.gitea.com/release-of-1.25.5/
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