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    CVE-2026-63686

    A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails. Users are recommended to upgrade to version 2.4.69, which fixes this issue.

    Published:Oct 1, 2026
    Last Modified:Oct 5, 2026
    EPS:Oct 1, 2026
    EPSS Score:0.00329
    CVSS Score:7.5

    Affected Products

    Vendor
    Apache
    Product
    Apache Http Server
    Vendor
    Apache
    Product
    Http Server
    Vendor
    Redhat
    Product
    Hummingbird

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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