Keycloak-services: keycloak-services: incomplete fix for cve-2026-15573 allows policy enforcer bypass via percent-encoded uri segments (Red Hat Red Hat build of Keycloak 26.4)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.85 % · percentile 58 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Awaiting Analysis
Description
Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directory traversal segments. An authenticated user can use these encoded characters to trick the enforcer into applying a less restrictive security policy than intended, potentially gaining unauthorized access to sensitive administrative or private application endpoints.
Weaknesses (CWE)
- CWE-862 — Missing Authorization
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | redhat |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-80829
- GCVE · GCVE-0-2026-74909
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat build of Keycloak 26.4 | unaffected 26.4.16-2 < * |
| Red Hat · Red Hat build of Keycloak 26.4 | unaffected 26.4-26 < * |
| Red Hat · Red Hat build of Keycloak 26.4 | unaffected 26.4-26 < * |
| Red Hat · Red Hat build of Keycloak 26.4.16 | |
| Red Hat · Red Hat build of Keycloak 26.4.16 | |
| Red Hat · Red Hat build of Keycloak 26.6 | unaffected 26.6.7-3 < * |
| Red Hat · Red Hat build of Keycloak 26.6 | unaffected 26.6-20 < * |
| Red Hat · Red Hat build of Keycloak 26.6 | unaffected 26.6-20 < * |
| Red Hat · Red Hat build of Keycloak 26.6.7 | |
| Red Hat · Red Hat build of Keycloak 26.6.7 | |
| Red Hat · Red Hat Single Sign-On 7 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |