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    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 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.

    Published:Aug 11, 2026
    Last Modified:Aug 24, 2026
    EPS:Aug 11, 2026
    EPSS Score:0.00222
    CVSS Score:7.4

    Affected Products

    Vendor
    Redhat
    Product
    Jboss Enterprise Application Platform
    Vendor
    Redhat
    Product
    Jboss Enterprise Application Platform Els
    Vendor
    Redhat
    Product
    Jboss Enterprise Application Platform Expansion Pack
    Vendor
    Redhat
    Product
    Jbosseapxp

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High