GHSA-498j-wxww-j897

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    GHSA-498j-wxww-j897

    Published: 24 May 2022Last Modified: 9 Dec 2025

    Summary: Mattermost Server is vulnerable to XSS through author_link field in Slack attachments

    Details: An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the author_link field of a Slack attachment.

    References: https://nvd.nist.gov/vuln/detail/CVE-2017-18879, 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-498j-wxww-j897 | CVE-DB