Red Hat Keycloak Dynamic Client Registration privileges management

Summaryinfo

A vulnerability categorized as critical has been discovered in Red Hat Keycloak. Affected by this vulnerability is an unknown functionality of the component Dynamic Client Registration. Executing a manipulation can lead to privileges management. The identification of this vulnerability is CVE-2026-15572. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Red Hat Keycloak (affected version unknown). This vulnerability affects an unknown functionality of the component Dynamic Client Registration. 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 Keycloak's Dynamic Client Registration (DCR) security policy management. The "Allowed Protocol Mapper Types" policy, which restricts which types of data mappers a client can use, fails to re-validate the mapper type during a client update if the mapper's configuration remains unchanged. An attacker with client registration privileges can exploit this by first registering an allowed mapper type with a malicious configuration and then swapping it for a restricted, high-privilege mapper type (such as one that hardcodes administrative roles). This allows the attacker to gain full administrative access to the Keycloak realm.

The advisory is available at access.redhat.com. This vulnerability was named CVE-2026-15572 since 07/13/2026. 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 08/05/2026). 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

• Keycloak

License

• open-source

Website

• Vendor: https://www.redhat.com/

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