CVE-2026-15554 [HIGH] – the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requir

the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP protocol.