This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-15554 →

DEBIAN-CVE-2026-15554

the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauth...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:14 undertow

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org