CVE Feed

    Dashboard / CVE / CVE-2026-13077

    CVE-2026-13077

    A missing bounds check in the BSON CodeWScope element accessors allows an attacker to trigger an out-of-bounds heap read via a crafted aggregation pipeline. The vulnerability can be exploited by an authenticated user by generating a malformed BSONColumn data containing a CodeWScope element, bypassing wire-level BSON validation. When the forged element is decompressed, the unchecked size value is used in pointer arithmetic, causing either a server crash or disclosure of adjacent heap memory contents.

    Published:Jul 22, 2026
    Last Modified:Aug 18, 2026
    EPS:Jul 22, 2026
    EPSS Score:0.00241
    CVSS Score:7.1

    Affected Products

    Vendor
    Mongodb
    Product
    Mongodb
    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

    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-2026-13078 (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…
    CVE-2026-9740 (CVSS 8.7) — A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod p…

    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