GO-2025-4186

    Dashboard / Vulnerabilities / GO-2025-4186

    GO-2025-4186

    Published: 8 Dec 2025Last Modified: 9 Dec 2025

    Summary: Mattermost Server does not prevent System Admin from arbitrary file creation in github.com/mattermost/mattermost-server

    Details: Mattermost Server does not prevent System Admin from arbitrary file creation in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost-server before v4.1.2-0.20171004201910-6be8113eb60c, from v4.2.0-rc1.0.20171004154238-fadd9514f6e7 before v4.2.1-0.20171004194140-6d3cb2ce07fc.

    References: https://github.com/advisories/GHSA-9rr5-q43r-ccv4, https://nvd.nist.gov/vuln/detail/CVE-2017-18875, https://github.com/mattermost/mattermost/commit/6be8113eb60cf5ddd2dc1c3f4db05cae0c183086, https://github.com/mattermost/mattermost/commit/6d3cb2ce07fc799832081e93843b405b390057fa, https://github.com/mattermost/mattermost/commit/fadd9514f6e71590aba781a7035e1de4150137b0, https://mattermost.com/security-updates

    Affected packages

    Package

    Name: github.com/mattermost/mattermost-server

    Purl: pkg:golang/github.com/mattermost/mattermost-server

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 4.3.0-rc1+incompatible
    Fixed -4.3.0+incompatible

    Affected versions

    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
    GO-2025-4186 | CVE-DB