Red Hat Advanced Cluster Security Token Exchange privileges management

Summaryinfo

A vulnerability was found in Red Hat Advanced Cluster Security and classified as very critical. Affected by this issue is some unknown functionality of the component Token Exchange. Executing a manipulation can lead to privileges management. The identification of this vulnerability is CVE-2026-19278. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Red Hat Advanced Cluster Security (the affected version is unknown) and classified as very critical. This vulnerability affects an unknown code of the component Token Exchange. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in StackRox/RHACS Central's Auth Machine-to-Machine (M2M) token exchange. When an administrator configures M2M role mappings, the system uses unanchored regular expressions for matching claim values. This allows an attacker with a valid OpenID Connect (OIDC) token, whose claim value is a superstring of a configured pattern, to gain unauthorized access to roles they were not intended to receive. This can lead to privilege escalation within the system.

The advisory is available at access.redhat.com. This vulnerability was named CVE-2026-19278 since 08/07/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/10/2026). This vulnerability is assigned to T1068 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.

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Productinfo

Vendor

• Red Hat

Name

• Advanced Cluster Security

License

• open-source

Website

• Vendor: https://www.redhat.com/

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