Identity Header Manipulation in OpenShift OAuth Proxy by Red Hat
CVE-2026-49332

8.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Container Platform 4
Vendor
CVE Published:
28 July 2026

What is CVE-2026-49332?

A flaw in OpenShift OAuth Proxy allows attackers to manipulate identity headers. The proxy utilizes only dash-variant keys (X-Forwarded-User) when setting authenticated identity headers, neglecting to strip underscore-variant keys (X_Forwarded_User) from incoming requests. This oversight lets an authenticated low-privilege user potentially smuggle a false identity, which could override legitimate identities in the upstream application, leading to unauthorized access and privilege escalation.

References

https://access.redhat.com/security/cve/CVE-2026-49332
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2483253
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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