CVE-2026-26247

CRITICAL9.1

Published 2026-07-03 · Updated 2026-07-07 · Source 88ee5874-cf24-4952-aea0-31affedb7ff2

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE-284

References

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