Improperly Implemented Security Check for Standard Affecting org.keycloak:keycloak-services package, versions [26.7.0,]
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-18751612
- published13 Aug 2026
- disclosed28 Jul 2026
- creditUnknown
Introduced: 28 Jul 2026
NewCVE-2026-18211 (opens in a new tab)How to fix?
There is no fixed version for org.keycloak:keycloak-services.
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 Improperly Implemented Security Check for Standard through the secure-client-uris client policy executor in the client configuration enforcement path. An attacker can bypass the redirect-URI security restriction by supplying a specially crafted domain name that satisfies the prefix check while pointing to an attacker-controlled host. This can let the attacker intercept authentication codes sent over an unencrypted connection, exposing users to account compromise during login flows.