GHSA-hcvw-475w-8g7p
Keycloak affected by improper invitation token validation
At a glance
- Published
- Updated
- CVE
- CVE-2026-1529
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.keycloak:keycloak-services | introduced 26.5.0, fixed 26.5.3 |
| Maven · org.keycloak:keycloak-services | introduced 0, fixed 26.2.13 |
| Maven · org.keycloak:keycloak-services | introduced 26.3.0, fixed 26.4.9 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-1529 ADVISORY
- https://github.com/keycloak/keycloak/issues/46145 WEB
- https://github.com/keycloak/keycloak/pull/46155 WEB
- https://github.com/keycloak/keycloak/commit/82cd7941d1dd28fa14a67a6e6b912301f1a5e1a1 WEB
- https://github.com/keycloak/keycloak/commit/8fc9a98026106a326f4faa98d4c9a48341ace2d7 WEB
- https://github.com/keycloak/keycloak/commit/b2519756487b519f95c07aa8b10afe003e492119 WEB
- https://access.redhat.com/errata/RHSA-2026:2363 WEB
- https://access.redhat.com/errata/RHSA-2026:2364 WEB
- https://access.redhat.com/errata/RHSA-2026:2365 WEB
- https://access.redhat.com/errata/RHSA-2026:2366 WEB
- https://access.redhat.com/security/cve/CVE-2026-1529 WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2433783 WEB
- https://github.com/keycloak/keycloak PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |