BIT-keycloak-2026-18215

vendorUSosv

Keycloak-services: keycloak-services: microsoft external access-token exchange bypasses configured tenant

Advisory ansehen veröffentlicht 2026-08-31Lizenz: per source

Keycloak provides a way to let users log in using Microsoft accounts while restricting access to a specific organization (tenant). A flaw was discovered where this restriction is ignored when using the token exchange feature. This means an attacker with a valid Microsoft token from a completely different organization could gain access to the Keycloak realm, potentially accessing sensitive data or performing unauthorized actions.

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beschreibt (1)

Zugehörige CVEs.

IDSchweregrad ausnutzbar
CVE-2026-18215UShigh8.1—
Keycloak provides a way to let users log in using Microsoft accounts while restricting access to a specific organization (tenant). A flaw was discovered where this restriction is i…
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