GO-2025-4190

    Dashboard / Vulnerabilities / GO-2025-4190

    GO-2025-4190

    Published: 8 Dec 2025Last Modified: 3 Mar 2026

    Summary: Mattermost Server is vulnerable to XSS attacks against an OAuth 2.0 allow/deny page in github.com/mattermost/mattermost-server

    Details: Mattermost Server is vulnerable to XSS attacks against an OAuth 2.0 allow/deny page in github.com/mattermost/mattermost-server

    References: https://github.com/advisories/GHSA-9x8x-w6g5-hx4w, https://nvd.nist.gov/vuln/detail/CVE-2017-18877, 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- 0
    Fixed -4.1.2+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-2025-4190 | CVE-DB