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    CVE-2026-8858

    IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.

    Published:Jun 22, 2026
    Last Modified:Jul 9, 2026
    EPS:Jun 22, 2026
    EPSS Score:0.0026
    CVSS Score:7.5

    Affected Products

    Vendor
    Ibm
    Product
    I
    Vendor
    Ibm
    Product
    Websphere Application Server

    Exploits

    No exploit reference

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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