CVE Feed

    Dashboard / CVE / CVE-2026-9743

    CVE-2026-9743

    In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid address and crashing the process. This issue allows an authenticated user who can run aggregation pipelines to cause a denial of service by issuing a specially crafted aggregation followed by getMore on affected versions.

    Published:Jun 9, 2026
    Last Modified:Jun 15, 2026
    EPS:Jun 9, 2026
    EPSS Score:0.00235
    CVSS Score:6.5

    Affected Products

    Vendor
    Mongodb
    Product
    Mongodb
    Vendor
    Mongodb
    Product
    Mongodb Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-84967 (CVSS 5.1) — A component of the MongoDB extension for Visual Studio Code does not neutralize special characters in a connec…
    CVE-2026-13071 (CVSS 7.1) — An authenticated user with read access can cause the mongod process to be terminated through certain aggregati…
    CVE-2026-13072 (CVSS 9.2) — When compute mode is enabled on a standalone mongod instance, insufficient validation of externally sourced BS…
    CVE-2026-13073 (CVSS 5.3) — An authenticated user with read-only privileges can cause the mongod process to terminate abnormally by issuin…
    CVE-2026-13074 (CVSS 6.9) — An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific…
    CVE-2026-13075 (CVSS 7.1) — An authenticated user can cause the mongod process to be terminated by the operating system under memory press…
    CVE-2026-13076 (CVSS 7.1) — An authenticated user can cause a {{mongod}} process to be terminated by the operating system under memory pre…
    CVE-2026-13077 (CVSS 7.1) — A missing bounds check in the BSON CodeWScope element accessors allows an attacker to trigger an out-of-bounds…
    CVE-2026-13078 (CVSS 6.3) — A vulnerability was discovered in MongoDB Server where the server-side MozJS scripting engine unconditionally …
    CVE-2026-11933 (CVSS 8.7) — A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON d…

    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