Red Hat Keycloak keycloak-services privileges management

Summaryinfo

A vulnerability categorized as problematic has been discovered in Red Hat Keycloak. This vulnerability affects unknown code of the component keycloak-services. The manipulation results in privileges management. This vulnerability is cataloged as CVE-2026-18573. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Red Hat Keycloak (affected version unknown). Affected is an unknown functionality of the component keycloak-services. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in the keycloak-services component of Keycloak, which is used for managing authentication and authorization flows. The issue occurs when a realm administrator configures client policies to enforce specific authentication requirements on confidential clients. Due to improper evaluation of the client state during an update operation, an attacker with client management permissions can bypass these security policies by first creating a public client and then updating it to a confidential client with weaker authentication. This can result in the persistence of clients that do not comply with the intended security hardening of the realm.

The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2026-18573 since 08/02/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/02/2026). The MITRE ATT&CK project declares the attack technique as T1068.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-51927). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Red Hat

Name

• Keycloak

License

• open-source

Website

• Vendor: https://www.redhat.com/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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