cvedb.io
CVE-2026-34454
LOW · CVSS 3.5
EPSS exploitation probability: 0%
Published 2026-04-14T23:16:28.167 · Last modified 2026-06-17T10:39:04.690

Summary

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. This issue is fixed in 7.15.2

Affected products

oauth2_proxy_project — oauth2_proxy

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.