GHSA-f24x-5g9q-753f

### Impact A regression introduced in [v7.11.0](https://github.com/oauth2-proxy/oauth2-proxy/pull/2605) is preventing OAuth2 Proxy from clearing the session cookie when rendering the sign-in page. This only impacts deployments that rely on the sign-in page as part of their logout flow. In those setups, a user may be shown the sign-in page while the existing session cookie remains valid, so the browser session is not actually logged out. On shared workstations be it browsers 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. ### Patches This issue is fixed in v7.15.2. ### Workarounds Do not rely on the sign-in page to clear an existing session. Instead: - Use the dedicated logout/sign-out endpoint of OAuth2 Proxy - Ensure your application logout flow explicitly clears the OAuth2 Proxy session cookie before redirecting users to the sign-in page - If needed, clear the session cookie at the reverse proxy or application layer as a temporary mitigation