GHSA-9x8x-w6g5-hx4w

    Dashboard / Vulnerabilities / GHSA-9x8x-w6g5-hx4w

    GHSA-9x8x-w6g5-hx4w

    Published: 24 May 2022Last Modified: 9 Dec 2025

    Summary: Mattermost Server is vulnerable to XSS attacks against an OAuth 2.0 allow/deny page

    Details: An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS attacks could occur against an OAuth 2.0 allow/deny page.

    References: https://nvd.nist.gov/vuln/detail/CVE-2017-18877, https://github.com/mattermost/mattermost, 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

    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
    GHSA-9x8x-w6g5-hx4w | CVE-DB