Vulnerability DatabaseCVE-2026-96547
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CVE-2026-96547
Published:November 06, 2026
Updated:November 09, 2026
A flaw was found in the Dynamic Client Registration component of Keycloak, an open-source identity and access management solution. The issue occurs because the system does not properly restrict which claim names can be used when setting up new clients. An attacker with valid registration credentials could create a client that incorrectly maps standard user profile information to sensitive security roles, potentially allowing them to gain unauthorized privileges on external applications that trust Keycloak tokens.
Affected Packages
https://github.com/keycloak/keycloak.git (GITHUB):
Affected version(s) >=1.6.0.Final <26.8.2 || >=2.0.0.CR1 <26.8.2 || >=3.0.0.CR1 <26.8.2 || >=4.0.0.Beta1 <26.8.2 || =5.0.0 <26.8.2 || >=6.0.0 <26.8.2 || >=7.0.0 <26.8.2 || >=8.0.0 <26.8.2 || >=9.0.0 <26.8.2 || >=10.0.0 <26.8.2 || >=11.0.0 <26.8.2 || >=12.0.0 <26.8.2 || >=13.0.0 <26.8.2 || =14.0.0 <26.8.2 || >=15.0.0 <26.8.2 || >=16.0.0 <26.8.2 || >=17.0.0 <26.8.2 || >=18.0.0 <26.8.2 || >=19.0.0 <26.8.2 || >=20.0.0 <26.8.2 || >=21.0.0 <26.8.2 || >=22.0.0 <26.8.2 || >=23.0.0 <26.8.2 || >=24.0.0 <26.8.2 || >=25.0.0 <26.8.2 || >=26.7.0 <26.8.2
Fix Suggestion:
Update to version 26.8.2
https://github.com/keycloak/keycloak.git (GITHUB):
Affected version(s) >=26.5.0 <26.6.8
Fix Suggestion:
Update to version 26.6.8
https://github.com/keycloak/keycloak.git (GITHUB):
Affected version(s) >=26.0.0 <26.4.17
Fix Suggestion:
Update to version 26.4.17
org.keycloak:keycloak-services (JAVA):
Affected version(s) >=26.5.0 <26.6.8.redhat-00002
Fix Suggestion:
Update to version 26.6.8.redhat-00002
org.keycloak:keycloak-services (JAVA):
Affected version(s) =5.0.0 <26.8.2 || >=8.0.0 <26.8.2 || >=19.0.0 <26.8.2 || >=13.0.0 <26.8.2 || >=10.0.0 <26.8.2 || >=16.0.0 <26.8.2 || >=25.0.0 <26.8.2 || >=4.0.0.Beta1 <26.8.2 || >=24.0.0 <26.8.2 || >=15.0.0 <26.8.2 || >=26.7.0 <26.8.2 || >=1.6.0.Final <26.8.2 || =14.0.0 <26.8.2 || >=2.0.0.CR1 <26.8.2 || >=7.0.0 <26.8.2 || >=21.0.0 <26.8.2 || >=6.0.0 <26.8.2 || >=17.0.0 <26.8.2 || >=3.0.0.CR1 <26.8.2 || >=22.0.0 <26.8.2 || >=23.0.0 <26.8.2 || >=20.0.0 <26.8.2 || >=11.0.0 <26.8.2 || >=12.0.0 <26.8.2 || >=9.0.0 <26.8.2 || >=18.0.0 <26.8.2
Fix Suggestion:
Update to version 26.8.2
org.keycloak:keycloak-services (JAVA):
Affected version(s) >=26.0.0 <26.4.17.redhat-00002
Fix Suggestion:
Update to version 26.4.17.redhat-00002
Related Resources (7)
https://access.redhat.com/errata/RHSA-2026:95762
https://access.redhat.com/security/cve/CVE-2026-96547
https://bugzilla.redhat.com/show_bug.cgi?id=2539387
https://access.redhat.com/errata/RHSA-2026:95760
https://nvd.nist.gov/vuln/detail/CVE-2026-96547
https://access.redhat.com/errata/RHSA-2026:95759
https://access.redhat.com/errata/RHSA-2026:95761
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CVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Missing Authorization
CWE-862
EPSS
Base Score:
0.30