GHSA-hgrp-fgm8-56g8

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    GHSA-hgrp-fgm8-56g8

    Published: 24 May 2022Last Modified: 5 Nov 2025

    Summary: Mattermost Server's OAuth 2.0 service is vulnerable to attack through Missing Authorization

    Details: An issue was discovered in Mattermost Server before 4.4.3 and 4.3.3. Attackers could reconfigure an OAuth app in some cases where Mattermost is an OAuth 2.0 service provider.

    References: https://nvd.nist.gov/vuln/detail/CVE-2017-18872, https://github.com/mattermost/mattermost/commit/8f6bb1570dd234c63de5241eff9fbb268aad358c, https://github.com/mattermost/mattermost, https://mattermost.com/security-updates, http://github.com/mattermost/mattermost/commit/753386c2b2b06233d8bd977e3db29a4fe18098cb

    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 -4.3.3

    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-hgrp-fgm8-56g8 | CVE-DB