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    CVE-2026-1323

    The extension fails to properly define allowed classes used when deserializing transport failure metadata. An attacker may exploit this to execute untrusted serialized code. Note that an active exploit requires write access to the directory configured at $GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_spool_filepath'].

    Published:Mar 17, 2026
    Last Modified:Apr 25, 2026
    EPS:Mar 17, 2026
    EPSS Score:0.00023
    CVSS Score:8.8

    Affected Products

    Vendor
    Cps-it
    Product
    Mailqueue
    Vendor
    Typo3
    Product
    Extension "mailqueue"

    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