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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Gitea | Gitea Open Source Git Server | unaffected |
|
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Fixes
Solution
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References
History
Fri, 03 Jul 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Gitea OAuth2 PKCE S256 challenges are not enforced during token exchange | |
| Weaknesses | CWE-284 | |
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: Gitea
Published:
Updated: 2026-07-03T20:19:34.820Z
Reserved: 2026-03-03T03:25:28.654Z
Link: CVE-2026-26247
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Weaknesses