Authentication Bypass in OpenShift OAuth Proxy by Red Hat
CVE-2026-49331

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Container Platform 4
Vendor
CVE Published:
5 August 2026

What is CVE-2026-49331?

A significant flaw exists in the OpenShift OAuth Proxy that affects paths configured to bypass authentication via skip-auth-regex. This vulnerability allows the proxy to forward client-supplied identity headers, such as X-Forwarded-User, X-Forwarded-Email, and X-Forwarded-Access-Token, to the upstream application without adequate validation. An unauthenticated attacker could exploit this flaw by injecting forged identity headers on paths that are intended to be whitelisted for authentication bypass, potentially compromising user identity and application security.

References

https://access.redhat.com/security/cve/CVE-2026-49331
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2483252
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Jeremy Choi (Red Hat).
.