CVE-2026-11986: Keycloak Admin UI REST Extensions Bulk Role-removal Endpoints Fail To Vulnerability

MODERATE
Advisory Identifier: GHSA-6w3v-mcfh-m3q7
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CVSS 4.9
CWE-425
Published
Advisory Summary

CVE-2026-11986 is a MODERATE (CVSS 4.9) bulk role-removal endpoints fail to vulnerability (CWE-425: Direct Request ('Forced Browsing')) affecting Keycloak Admin UI REST Extensions libraries in the Maven ecosystem. The issue involves bulk role-removal endpoints fail to perform granular permission checks. Remediation is available by upgrading affected packages to version 26.7.0.

CVE-2026-11986 at a Glance

CVE Identifier CVE-2026-11986
GHSA Identifier GHSA-6w3v-mcfh-m3q7
Severity MODERATE
CVSS v3.1 Base Score 4.9
CWE Classification CWE-425: Direct Request ('Forced Browsing')
Affected Product Keycloak Admin UI REST Extensions
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-11986

To remediate this vulnerability, upgrade all affected Keycloak Admin UI REST Extensions dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.keycloak:keycloak-rest-admin-ui-ext fixed: 26.7.0 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-rest-admin-ui-ext</artifactId>
    <version>26.7.0</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.keycloak

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-11986, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.keycloak

Analyze the terminal output to locate any version of Keycloak Admin UI REST Extensions in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 26.7.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.keycloak command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-425: Direct Request ('Forced Browsing'), where the web application does not adequately enforce appropriate authorization on all restricted urls, scripts, or files. In Keycloak Admin UI REST Extensions, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A flaw was found in the admin-ui-ext component of Keycloak, which provides extended administrative user interface capabilities. The issue occurs because certain bulk role-removal endpoints fail to perform granular permission checks when deleting role mappings. This allows a delegated administrator with limited permissions to remove highly privileged roles from other users or groups, potentially disrupting administrative access control.

CVE-2026-11986 Affected Keycloak Admin UI REST Extensions Versions

1 component(s)
Fixed Versions:
26.7.0
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-rest-admin-ui-ext
maven/org.keycloak/keycloak-rest-admin-ui-ext
Maven
< 26.7.0
26.7.0

References

NVD — CVE-2026-11986 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11986
Keycloak Admin UI REST Extensions Source Repository REPOSITORY
https://github.com/keycloak/keycloak/issues/49766
Keycloak Admin UI REST Extensions Source Repository REPOSITORY
https://github.com/keycloak/keycloak/pull/49826
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/f3831f01fd4abceb47e9675ab5f4c17268ba9e9d
access.redhat.com/errata/rhsa-2026:50... WEB
https://access.redhat.com/errata/RHSA-2026:50848
access.redhat.com/errata/rhsa-2026:50... WEB
https://access.redhat.com/errata/RHSA-2026:50849
Keycloak Admin UI REST Extensions Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-11986
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2487906
Keycloak Admin UI REST Extensions Source Repository REPOSITORY
https://github.com/keycloak/keycloak
Keycloak Admin UI REST Extensions Release RELEASE
https://github.com/keycloak/keycloak/releases/tag/26.7.0

Frequently Asked Questions

What is CVE-2026-11986?
CVE-2026-11986 is a security vulnerability in Keycloak Admin UI REST Extensions involving bulk role-removal endpoints fail to perform granular permission checks under CWE-425: Direct Request ('Forced Browsing').
Which Keycloak Admin UI REST Extensions versions are affected?
Affected versions include releases prior to 26.7.0 across affected packages: org.keycloak:keycloak-rest-admin-ui-ext.
What version fixes CVE-2026-11986?
Upgrading to 26.7.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is keycloak-rest-admin-ui-ext affected?
Yes, org.keycloak:keycloak-rest-admin-ui-ext is affected in releases prior to 26.7.0. Upgrade your dependency to 26.7.0 or later.
What is the CVSS score of CVE-2026-11986?
CVE-2026-11986 has a CVSS v3.1 base score of 4.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2026-11986?
CVE-2026-11986 is classified under CWE-425: Direct Request ('Forced Browsing') (The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files.).
How can I check Maven dependencies for CVE-2026-11986?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.keycloak'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-6w3v-mcfh-m3q7",
  "modified" : "2026-08-19T19:32:02Z",
  "published" : "2026-06-11T18:31:34Z",
  "aliases" : [ "CVE-2026-11986" ],
  "summary" : "Keycloak Admin UI REST Extensions: bulk role-removal endpoints fail to perform granular permission checks",
  "details" : "A flaw was found in the admin-ui-ext component of Keycloak, which provides extended administrative user interface capabilities. The issue occurs because certain bulk role-removal endpoints fail to perform granular permission checks when deleting role mappings. This allows a delegated administrator with limited permissions to remove highly privileged roles from other users or groups, potentially disrupting administrative access control.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-rest-admin-ui-ext"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "26.7.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-11986"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/issues/49766"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/pull/49826"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/commit/f3831f01fd4abceb47e9675ab5f4c17268ba9e9d"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:50848"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:50849"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-11986"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2487906"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keycloak/keycloak"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/releases/tag/26.7.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-425" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-19T19:32:02Z",
    "nvd_published_at" : "2026-06-11T18:16:25Z"
  }
}