Go/github.com/oauth2-proxy/oauth2-proxy CVE-2026-34457: critical 9.1, EPSS 0.47%

OAuth2 Proxy's Health Check User-Agent Matching Bypasses Authentication in auth_request Mode

Action: No fix published. Pin and monitor.

Affected

Fixed versions

No fixed version in the source.

Sources

• osv: GHSA-5hvv-m4w4-gf6v#Go/github.com/oauth2-proxy/oauth2-proxy
• https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-5hvv-m4w4-gf6v
• https://nvd.nist.gov/vuln/detail/CVE-2026-34457
• https://github.com/oauth2-proxy/oauth2-proxy
• https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2

CVE-2026-34457 · published 2026-04-14T22:31:19Z · modified 2026-06-25T18:56:29.674113323Z · JSON