Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization

Özet

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A flaw was found in the token sanitization logic of Keycloak, an open source identity and access management solution. The issue occurs when a protocol mapper is configured to emit structured claims using the JSON type. The security check designed to remove unauthorized role mappings only looks for standard Java maps and fails to recognize Jackson based JSON objects. This allows an attacker to inject forged client roles into security tokens, which could lead to unauthorized access to protected resources.

Etkilenen sürümler2 yazılım

Kaynaklar4 kaynak

• CVE.org kaydı
• NVD kaydı
• bugzilla.redhat.com/show_bug.cgi Üçüncü taraf
• access.redhat.com/security/cve/CVE-2026-97848 Diğer

Kayıt geçmişi

1. 6 Kas 2026 09:03Yayımlandı

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