CVE-2026-49331 Openshift/oauth-proxy: openshift/oauth-proxy: unauthenticated identity header injection on whitelisted paths
Unauthenticated attackers can inject forged identity headers on whitelisted paths, bypassing authentication and potentially escalating privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-49331?
CVE-2026-49331 is a medium-severity authentication bypass vulnerability in Red Hat OpenShift Container Platform 4, published on 5 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in openshift/oauth-proxy. On paths configured to bypass authentication (skip-auth-regex), the proxy forwards client-supplied identity headers (X-Forwarded-User, X-Forwarded-Email, X-Forwarded-Access-Token) to the upstream application without stripping them. An unauthenticated attacker can inject forged identity headers on whitelisted paths.
Weakness: CWE-345
Which versions are affected by CVE-2026-49331?
How do I fix CVE-2026-49331?
No fix has been published for CVE-2026-49331 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-49331 being exploited?
There is no known exploitation of CVE-2026-49331 in the wild and no public exploit code.
Sources
Also known as GHSA-6chj-7h9j-x3p6.