GHSA-x4p7-7chp-64hq
Keycloak: Unauthorized authentication via disabled SAML Identity Provider
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2026-2603
- Alias
- BIT-keycloak-2026-2603
- 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. A remote attacker could bypass security controls by sending a valid SAML response from an external Identity Provider (IdP) to the Keycloak SAML endpoint for IdP-initiated broker logins. This allows the attacker to complete broker logins even when the SAML Identity Provider is disabled, leading to unauthorized authentication.
Paquets affectés
| Paquet | Versions |
|---|---|
| Maven · org.keycloak:keycloak-services | introduced 0, fixed 26.5.5 |
| Maven · org.keycloak:keycloak-server-spi-private | introduced 0, fixed 26.5.5 |
Références
- https://nvd.nist.gov/vuln/detail/CVE-2026-2603 ADVISORY
- https://github.com/keycloak/keycloak/issues/46911 WEB
- https://github.com/keycloak/keycloak/pull/46932 WEB
- https://github.com/keycloak/keycloak/commit/4fd5367e6cc28cfa68fb2240fc459c12b1fdbf2a WEB
- https://github.com/keycloak/keycloak/commit/8ed7e59dc08d79751a27c23aadb590f06b43f132 WEB
- https://access.redhat.com/errata/RHSA-2026:3925 WEB
- https://access.redhat.com/errata/RHSA-2026:3926 WEB
- https://access.redhat.com/errata/RHSA-2026:3947 WEB
- https://access.redhat.com/errata/RHSA-2026:3948 WEB
- https://access.redhat.com/security/cve/CVE-2026-2603 WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2440300 WEB
- https://github.com/keycloak/keycloak PACKAGE
- https://github.com/keycloak/keycloak/commits/26.5.5 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |