DEBIAN-CVE-2026-84966

    Dashboard / Vulnerabilities / DEBIAN-CVE-2026-84966

    DEBIAN-CVE-2026-84966

    Published: 3 Sept 2026Last Modified: 23 Sept 2026
    Upstream:
    CVE-2026-84966

    Summary:

    Details: An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intended buffer and terminate the calling process. No authentication is required, but the calling application must pass the oversized name in a specific form.

    References: https://security-tracker.debian.org/tracker/CVE-2026-84966

    Affected packages

    Package

    Name: mongo-cxx-driver

    Purl: pkg:deb/debian/mongo-cxx-driver?arch=source&distro=forky

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.5.2-1

    Affected versions

    3.10.1-1
    3.10.2-1

    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
    DEBIAN-CVE-2026-84966 | CVE-DB