8.1

CVE-2026-15573

Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher

Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher

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.
Mögliche Gegenmaßnahme
Keycloak Server: Install latest version
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Redhat ≫ Build Of Keycloak Version >= 26.4 < 26.4.14
Redhat ≫ Build Of Keycloak Version >= 26.6 < 26.6.5
Redhat ≫ Data Grid Version8.0
Redhat ≫ Single Sign-on Version7.0
VulnDex Vulnerability Enrichment
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Weitere Schwachstelleninformationen
SystemKeycloak
≫
Produkt Keycloak Server
Version < 26.4.14
Version < 26.6.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.29% 0.213
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 8.1 2.8 5.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE-178 Improper Handling of Case Sensitivity

The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.

https://access.redhat.com/security/cve/CVE-2026-15573
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2499593
Vendor Advisory
Issue Tracking
https://access.redhat.com/errata/RHSA-2026:50846
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50847
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50848
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50849
Vendor Advisory
https://github.com/keycloak/keycloak/security/advisories/GHSA-2888-g6qc-w4mj
Third Party Advisory