Vulnerabilities CVE-2026-15554

CVE-2026-15554

High

Open

TLP:CLEAR

Undertow-core: undertow: authentication bypass via ajp ssl_cert/is_ssl forgery

NVD CVE.org

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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.

Details

CVSS Score: 7.4
EPSS Score ⓘ: 0.19%

8.5th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Confidence: 90%
Published: Aug 11, 2026
Last Modified: Aug 11, 2026

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