CVE-2026-1529
Published: Feb 9, 2026
Modified: Feb 16, 2026
CVSS v3.1
8.1
Description
A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token (JWT) payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an unauthorized organization, leading to unauthorized access.
| Vendor | Product | Versions |
|---|---|---|
Red Hat | Red Hat build of Keycloak 26.2 | unaffected 26.2.13-1 - < * |
Red Hat | Red Hat build of Keycloak 26.2 | unaffected 26.2-15 - < * |
Red Hat | Red Hat build of Keycloak 26.2 | unaffected 26.2-15 - < * |
Red Hat | Red Hat build of Keycloak 26.2.13 | All versions |
Red Hat | Red Hat build of Keycloak 26.4 | unaffected 26.4.9-1 - < * |
Red Hat | Red Hat build of Keycloak 26.4 | unaffected 26.4-11 - < * |
Red Hat | Red Hat build of Keycloak 26.4 | unaffected 26.4-10 - < * |
Red Hat | Red Hat build of Keycloak 26.4.9 | All versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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