CVE-2026-82059

    Dashboard / Vulnerabilities / CVE-2026-82059

    CVE-2026-82059

    Published: 8 Sept 2026Last Modified: 18 Sept 2026

    Summary: Improper Access Restriction of Internal Aggregation Expression in MongoDB Server Leads to Assertion Failure and Denial of Service

    Details: An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internal cluster operations. By crafting a malformed index specification within this expression, an authenticated user with read-only privileges could trigger an assertion failure in the index key generation code path. In certain build configurations, this assertion failure results in termination of the mongod process, causing a denial of service to all connected clients.

    References: https://jira.mongodb.org/browse/SERVER-130571, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82059.json, https://nvd.nist.gov/vuln/detail/CVE-2026-82059

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 37d84072b5c5b9fd723db5fa133fb202ad2317f1
    Fixed -6df23543fc9e7ee456ff05ed726b22865ea753e7

    Affected versions

    r7.0.35
    r7.0.27-rc0
    r7.0.27
    r7.0.27-alpha0
    r7.0.26-rc0
    r7.0.26
    r7.0.24-rc0
    r7.0.24
    r7.0.25-alpha0
    r7.0.23-rc1
    r7.0.23
    r7.0.23-rc0
    r7.0.22-rc0
    r7.0.22
    r7.0.21-rc0
    r7.0.21
    r7.0.21-alpha0
    r7.0.18
    r7.0.17
    r7.0.16-rc1
    r7.0.16-rc0
    r7.0.16
    r7.0.15
    r7.0.15-rc1
    r7.0.15-rc0
    r7.0.14-rc0
    r7.0.14
    r7.0.13-rc1
    r7.0.13
    r7.0.13-rc0
    r7.0.12-rc1
    r7.0.12
    r7.0.12-rc0
    r7.0.11-rc2
    r7.0.11
    r7.0.11-rc1
    r7.0.11-rc0
    r7.0.10-rc0
    r7.0.10
    r7.0.9-rc1
    r7.0.9
    r7.0.9-rc0
    r7.0.8-rc0
    r7.0.8
    r7.0.7-rc2
    r7.0.7
    r7.0.7-rc1
    r7.0.7-rc0
    r7.0.6-rc0
    r7.0.6
    r7.0.5-rc0
    r7.0.5
    r7.0.4-rc0
    r7.0.4
    r7.0.3-rc1
    r7.0.3
    r7.0.3-rc0
    r7.0.2-rc2
    r7.0.2
    r7.0.2-rc1
    r7.0.2-rc0
    r7.0.1-rc0
    r7.0.1
    r7.0.0

    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
    CVE-2026-82059 | CVE-DB