Access of Resource Using Incompatible Type ('Type Confusion') Affecting org.keycloak:keycloak-services package, versions [,26.4.14)[26.6.0, 26.6.5)[26.7.0, 26.7.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGKEYCLOAK-18752041
- published13 Aug 2026
- disclosed5 Aug 2026
- creditArthur Chan
Introduced: 5 Aug 2026
NewCVE-2026-15572 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-services to version 26.4.14, 26.6.5, 26.7.1 or higher.
Overview
org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services.
Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type ('Type Confusion') in ProtocolMappersClientRegistrationPolicy via the Dynamic Client Registration client update path. An attacker with client registration privileges can bypass the “Allowed Protocol Mapper Types” restriction by updating an existing mapper so its configuration stays the same while changing its mapper type to a restricted one, then use that mapper to hardcode privileged roles and gain full administrative access to the realm.