CVE Feed

    Dashboard / CVE / CVE-2021-32040

    CVE-2021-32040

    It may be possible to have an extremely long aggregation pipeline in conjunction with a specific stage/operator and cause a stack overflow due to the size of the stack frames used by that stage. If an attacker could cause such an aggregation to occur, they could maliciously crash MongoDB in a DoS attack. This vulnerability affects MongoDB Server v4.4 versions prior to and including 4.4.28, MongoDB Server v5.0 versions prior to 5.0.4 and MongoDB Server v4.2 versions prior to 4.2.16. Workaround: >= v4.2.16 users and all v4.4 users can add the --setParameter internalPipelineLengthLimit=50 instead of the default 1000 to mongod at startup to prevent a crash.

    Published:Apr 12, 2022
    Last Modified:Nov 21, 2024
    EPS:Apr 12, 2022
    EPSS Score:0.00618
    CVSS Score:6.5

    Affected Products

    Vendor
    Mongodb
    Product
    Mongodb

    Exploits

    No exploit reference

    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