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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2026-16102

Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers

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Status
Published
Published
Updated
Assigning organization
redhat

Description

A flaw was found in the Dynamic Client Registration (DCR) component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker with a standard user account and a limited Initial Access Token can exploit this to forge administrative roles in their access token. This allows the attacker to take over other clients, steal confidential secrets, and potentially gain full administrative control over the realm.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4.14-1 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-22 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-22 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4.14

Default version status: unaffected

Red Hat Red Hat build of Keycloak 26.4.14

Default version status: unaffected

Red Hat Red Hat build of Keycloak 26.6

Default version status: affected

  • 26.6.5-1 to < *unaffected

Red Hat Red Hat build of Keycloak 26.6

Default version status: affected

  • 26.6-11 to < *unaffected

Red Hat Red Hat build of Keycloak 26.6

Default version status: affected

  • 26.6-11 to < *unaffected

Red Hat Red Hat build of Keycloak 26.6.5

Default version status: unaffected

Red Hat Red Hat build of Keycloak 26.6.5

Default version status: unaffected

Red Hat Red Hat build of Keycloak 26.6.5

Default version status: unaffected

Red Hat Red Hat Data Grid 8

Default version status: unaffected

Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Default version status: unaffected

Red Hat Red Hat Single Sign-On 7

Default version status: affected

References