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    CVE-2026-4358

    A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution (SBE) engine when an in-memory hash table is spilled to disk.

    Published:Mar 17, 2026
    Last Modified:Apr 2, 2026
    EPS:Mar 17, 2026
    EPSS Score:0.00078
    CVSS Score:6.4

    Affected Products

    Vendor
    Mongodb
    Product
    Mongodb
    Vendor
    Mongodb
    Product
    Mongodb Server

    Exploits

    https://jira.mongodb.org/browse/SERVER-118849

    Common Weakness Enumeration

    CWE-415 Double Free

    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