CVE-2026-49332: Interpretation Conflict in Red Hat Red Hat OpenShift Container Platform 4
A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys (X-Forwarded-User) but does not strip underscore-variant keys (X_Forwarded_User) from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing an authenticated low-privilege user to smuggle a forged identity that may override the legitimate authenticated identity in the upstream application.
CVE-2026-49332: Interpretation Conflict in Red Hat Red Hat OpenShift Container Platform 4
Description
A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys (X-Forwarded-User) but does not strip underscore-variant keys (X_Forwarded_User) from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing an authenticated low-privilege user to smuggle a forged identity that may override the legitimate authenticated identity in the upstream application.
CVSS v3.1
Score 8.5high
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-05-29T13:28:56.553Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-49332","vendor":"Red Hat"}]
Threat ID: 6a68a2979c2644c7f89d5d1a
Added to database: 07/28/2026, 12:37:43 UTC
Last updated: 07/28/2026, 12:37:43 UTC
Views: 1
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