What is CVE-2026-34454?

CVE-2026-34454 is a low-severity vulnerability in Oauth2-proxy, classified under Insufficient Session Expiration. CVSS score: 3.5/10. Published 2026-04-14.

How severe is CVE-2026-34454?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Oauth2-proxy

CVE-2026-34454

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…

EPSS: 0.000 (1.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Oauth2-proxy — versions >= 7.11.0, < 7.15.2

Weakness classification (CWE)

References

https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-f24x-5g9q-753f (x_refsource_CONFIRM)
https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34454?: CVE-2026-34454 is a low-severity vulnerability in Oauth2-proxy, classified under Insufficient Session Expiration. CVSS score: 3.5/10. Published 2026-04-14.
How severe is CVE-2026-34454?: Low severity. CVSS v3 base score is 3.5 out of 10.