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    CVE-2026-67399

    Deserialization of untrusted data in WHMCS 9.0.0 before 9.0.8 and 8.0.0 before 8.13.7 allows remote attackers to execute arbitrary code.

    Published:Sep 14, 2026
    Last Modified:Sep 17, 2026
    EPS:Sep 14, 2026
    EPSS Score:0.00685
    CVSS Score:9.3

    Affected Products

    Vendor
    Webpros
    Product
    Whmcs

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    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