Incorrect Behavior Order: Authorization Before Parsing and Canonicalization Affecting org.keycloak:keycloak-services package, versions [,26.5.7)
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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- published5 Apr 2026
- disclosed2 Apr 2026
- creditUnknown
Introduced: 2 Apr 2026
NewCVE-2026-4636 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-services to version 26.5.7 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 Incorrect Behavior Order: Authorization Before Parsing and Canonicalization via the UMA Policy Resource (user with the uma_protection role). An attacker can gain unauthorized access to resources owned by other users by including their resource identifiers in a policy creation request, allowing them to obtain sensitive information or perform actions without proper authorization.