CVE-2026-15554
HIGH
NVD
CVSS Score
7.4
Severity
HIGH
Published
Aug 11, 2026
Vendor
unknown
Description
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.