Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:2363
- https://access.redhat.com/errata/RHSA-2026:2364
- https://access.redhat.com/errata/RHSA-2026:2365
- https://access.redhat.com/errata/RHSA-2026:2366
- https://access.redhat.com/security/cve/CVE-2026-1529
- https://bugzilla.redhat.com/show_bug.cgi?id=2433783
FAQ
What is CVE-2026-1529?
CVE-2026-1529 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 lac...
How severe is CVE-2026-1529?
CVE-2026-1529 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1529?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.