CVE-2026-26247

creationtimestamp| type| source ---|---|--- 2026-09-02 23:20:04+00:00| seen| https://bsky.app/profile/stackflag.bsky.social/post/3mul35abwqo2l...

CVE-2026-26247 Gitea OAuth2 PKCE S256 challenges are not enforced during token exchange

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...