Red Hat OpenShift Container Platform openshift/oauth-proxy input validation

Summaryinfo

A vulnerability identified as critical has been detected in Red Hat OpenShift Container Platform. Affected by this issue is some unknown functionality of the component openshift/oauth-proxy. The manipulation leads to input validation. This vulnerability is referenced as CVE-2026-49331. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Red Hat OpenShift Container Platform (affected version not known). This issue affects some unknown functionality of the component openshift/oauth-proxy. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at access.redhat.com. The identification of this vulnerability is CVE-2026-49331 since 05/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/05/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Virtualization Software

Vendor

• Red Hat

Name

• OpenShift Container Platform

License

• open-source

Website

• Vendor: https://www.redhat.com/

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CPE 2.2info

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