Vulnerability DatabaseCVE-2026-19688
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CVE-2026-19688
Published:November 06, 2026
Updated:November 09, 2026
A flaw was found in the Admin REST API of Keycloak, an identity and access management solution. The Admin API fails to verify the intended audience of bearer tokens during authentication. This issue allows an attacker who operates a client within a realm to capture an administrator's access token and reuse it to perform unauthorized administrative actions, potentially leading to full realm compromise.
Affected Packages
https://github.com/keycloak/keycloak.git (GITHUB):
Affected version(s) >=1.0-beta-1 <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 || >=26.0.0 <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
org.keycloak:keycloak-services (JAVA):
Affected version(s) >=13.0.0 <26.8.2 || >=26.7.0 <26.8.2 || >=9.0.0 <26.8.2 || >=16.0.0 <26.8.2 || =14.0.0 <26.8.2 || >=19.0.0 <26.8.2 || >=8.0.0 <26.8.2 || =5.0.0 <26.8.2 || >=17.0.0 <26.8.2 || >=6.0.0 <26.8.2 || >=26.0.0 <26.8.2 || >=7.0.0 <26.8.2 || >=18.0.0 <26.8.2 || >=12.0.0 <26.8.2 || >=2.0.0.CR1 <26.8.2 || >=15.0.0 <26.8.2 || >=24.0.0 <26.8.2 || >=1.0-beta-1 <26.8.2 || >=21.0.0 <26.8.2 || >=25.0.0 <26.8.2 || >=3.0.0.CR1 <26.8.2 || >=11.0.0 <26.8.2 || >=10.0.0 <26.8.2 || >=20.0.0 <26.8.2 || >=4.0.0.Beta1 <26.8.2 || >=22.0.0 <26.8.2 || >=23.0.0 <26.8.2
Fix Suggestion:
Update to version 26.8.2
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
Related Resources (5)
https://access.redhat.com/security/cve/CVE-2026-19688
https://nvd.nist.gov/vuln/detail/CVE-2026-19688
https://bugzilla.redhat.com/show_bug.cgi?id=2514534
https://access.redhat.com/errata/RHSA-2026:95761
https://access.redhat.com/errata/RHSA-2026:95762
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CVSS v4
Base Score:
8.5
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Authentication
CWE-287
EPSS
Base Score:
0.36