VIR Vulnerability Intelligence Relay

CVE-2026-40575

critical
Published 2026-04-22 · Modified 2026-05-05
CVSS v3
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v2
—
VIR risk
9.1

Description

OAuth2 Proxy has an Authentication Bypass via X-Forwarded-Uri Header Spoofing

Predictions

Exploit likelihood
94%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security-advisories@github.com — https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-7x63-xv5r-3p2x

Package impact
EcosystemPackageVulnerableFixed
golang Gogithub.com/oauth2-proxy/oauth2-proxy/v7>=7.5.0,<7.15.27.15.2

Application impact
VendorProductVersionsFixed
oauth2_proxy_projectoauth2_proxy{"startIncluding":"7.5.0","endExcluding":"7.15.2"}7.15.2

References

CWEs

CWE-290

Verify integrity in audit chain (admin only). AS-IS.