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 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
Configurations

Configuration 1 (hide)

cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:*:*:*:*:*:*:*:*

History

23 Apr 2026, 14:15

Type Values Removed Values Added
References () https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2 - () https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2 - Vendor Advisory
References () https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-f24x-5g9q-753f - () https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-f24x-5g9q-753f - Release Notes
First Time Oauth2 Proxy Project
Oauth2 Proxy Project oauth2 Proxy
CPE cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:*:*:*:*:*:*:*:*

14 Apr 2026, 23:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-04-14 23:16

Updated : 2026-04-23 14:15


NVD link : CVE-2026-34454

Mitre link : CVE-2026-34454

CVE.ORG link : CVE-2026-34454


JSON object : View

Products Affected

oauth2_proxy_project

  • oauth2_proxy
CWE
CWE-384

Session Fixation

CWE-613

Insufficient Session Expiration