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    CVE-2026-23933

    In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.

    Published:Aug 18, 2026
    Last Modified:Aug 19, 2026
    EPS:Aug 18, 2026
    EPSS Score:
    CVSS Score:7.7

    Affected Products

    Vendor
    Zabbix
    Product
    Zabbix

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-259 Use of Hard-coded Password

    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