Use of Non-Canonical URL Paths for Authorization Decisions Affecting org.keycloak:keycloak-common package, versions [,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-19233608
- published24 Aug 2026
- disclosed5 Aug 2026
- creditUnknown
Introduced: 5 Aug 2026
NewCVE-2026-15573 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-common to version 26.7.1 or higher.
Overview
org.keycloak:keycloak-common is an Open Source Identity and Access Management For Modern Applications and Services.
Affected versions of this package are vulnerable to Use of Non-Canonical URL Paths for Authorization Decisions in the PathMatcher class in common/src/main/java/org/keycloak/common/util/PathMatcher.java. An attacker can make a restricted resource fall through to a less restrictive policy by sending a request URI with a trailing slash or matrix parameters. This lets an authenticated user reach administrative or other protected areas that should have been denied under the intended resource match.