CVE-2026-4630
MediumCVSS 6.8Summary
W Keycloak znaleziono lukę, która pozwala uwierzytelnionemu klientowi wykorzystać podatność Insecure Direct Object Reference (IDOR) w punkcie końcowym API Ochrony Usług Autoryzacji. Znając unikalny identyfikator zasobu (UUID) należący do innego Serwera Zasobów w tym samym obszarze, klient może obejść kontrole autoryzacji.
Risk Assessment
Luka ta umożliwia klientowi wykonywanie nieautoryzowanych operacji GET, PUT i DELETE na zasobach, co prowadzi do ujawnienia informacji oraz potencjalnej nieautoryzowanej modyfikacji lub usunięcia danych.
Recommendation
Zaleca się zaktualizowanie Keycloak do najnowszej wersji, aby załatać tę podatność oraz wdrożenie dodatkowych kontroli autoryzacji dla punktów końcowych API.
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Original NVD description (English source)
A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference (IDOR) vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier (UUID) belonging to another Resource Server within the same realm, the client could bypass authorization checks. This allows the client to perform unauthorized GET, PUT, and DELETE operations on resources, leading to information disclosure and potential unauthorized modification or deletion of data.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

