Summaryinfo

A vulnerability was found in Red Hat Advanced Cluster Security. It has been declared as problematic. The impacted element is an unknown function of the component OAuth Call Handler. Such manipulation of the argument error/error_uri leads to redirect. This vulnerability is traded as CVE-2026-4981. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Red Hat Advanced Cluster Security (version now known). Affected by this issue is some unknown processing of the component OAuth Call Handler. The manipulation of the argument error/error_uri with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity.

The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2026-4981. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/27/2026). This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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Vendor

• Red Hat

Name

• Advanced Cluster Security

License

• open-source

Website

• Vendor: https://www.redhat.com/

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