CVE-2026-40575

critical

Published 2026-04-22 · Modified 2026-05-05

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

9.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

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

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Go	github.com/oauth2-proxy/oauth2-proxy/v7	`>=7.5.0,<7.15.2`	`7.15.2`

Application impact

Vendor	Product	Versions	Fixed
oauth2_proxy_project	oauth2_proxy	`{"startIncluding":"7.5.0","endExcluding":"7.15.2"}`	`7.15.2`

References

CWEs

CWE-290

Community-verified mitigations for this CVE will appear above when contributors publish them.

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