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    CVE-2026-82066

    A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server. An authenticated user with database read and write privileges can trigger the security issue through crafted query operations, causing the server to read memory beyond allocated buffer boundaries. The revealed memory contents may be partially observable through diagnostic query statistics output.

    Published:Sep 8, 2026
    Last Modified:Sep 8, 2026
    EPS:Sep 8, 2026
    EPSS Score:
    CVSS Score:4.3

    Affected Products

    Vendor
    Mongodb
    Product
    Mongodb Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2026-82074 (CVSS 7.1) — MongoDB Server contains an incorrect authorization vulnerability in the aggregation framework. An authenticate…
    CVE-2026-82073 (CVSS 7.1) — A security issue in the MongoDB Server aggregation framework allows an authenticated user with limited read pr…
    CVE-2026-82071 (CVSS 7.2) — Insufficient validation of storage engine configuration options in MongoDB Server allows an authenticated user…
    CVE-2026-82070 (CVSS 7.1) — A security issue in MongoDB Server's diagnostic reporting interface allows an authenticated user with monitori…
    CVE-2026-82069 (CVSS 5.1) — A security issue in MongoDB Server's query statistics serialization on the router allows users with monitoring…
    CVE-2026-82068 (CVSS 7.1) — A security issue in MongoDB Server allows an authenticated user with write privileges to trigger a persistent …
    CVE-2026-82067 (CVSS 9.2) — Improper handling of case sensitivity in the configuration validation component of MongoDB Server may cause th…
    CVE-2026-82065 (CVSS 7.1) — A security issue in the MongoDB Server's storage engine integration layer allows an authenticated user with co…

    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