CVE-2026-15573
CVE CVE-2026-15573EUVD EUVD-2026-53381Published 2026-08-05T13:50:03.000ZLast changed 2026-08-05T19:33:13.000ZCVSS 8.1
What the advisory describes
A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies (PathMatcher) does not properly normalize URIs before comparison. By adding extra characters like a trailing slash or matrix parameters to a URL, an attacker can trick the system into applying a less restrictive security policy than intended. This allows an authenticated user to access administrative or restricted areas they should not have permission to see.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Red Hat — Red Hat build of Keycloak 26.4 patch: 26.4.14-1; patch: 26.4-22
- Red Hat — Red Hat build of Keycloak 26.6 patch: 26.6.5-1; patch: 26.6-11
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Red Hat — Red Hat build of Keycloak
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