{"schemaVersion":3,"id":"CVE-2026-34454","aliases":["GHSA-f24x-5g9q-753f","BIT-oauth2-proxy-2026-34454","GO-2026-5341"],"status":"published","duplicateOf":null,"title":null,"description":"OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. A regression introduced in 7.11.0 prevents OAuth2 Proxy from clearing the session cookie when rendering the sign-in page. In deployments that rely on the sign-in page as part of their logout flow, a user may be shown the sign-in page while the existing session cookie remains valid, meaning the browser session is not actually logged out. On shared workstations or devices, a subsequent user could continue to use the previous user's authenticated session. Deployments that use a dedicated logout/sign-out endpoint to terminate sessions are not affected. 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