CVE-2023-2831

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    CVE-2023-2831

    Published: 16 Jun 2023Last Modified: 12 Aug 2026

    Summary: Denial of Service while unescaping a Markdown string

    Details: Mattermost fails to unescape Markdown strings in a memory-efficient way, allowing an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters.

    References: https://mattermost.com/security-updates/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/2xxx/CVE-2023-2831.json, https://nvd.nist.gov/vuln/detail/CVE-2023-2831

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 25e8c1fcddb1154de49480eb5cd7eb085507d138
    Fixed -None

    Affected versions

    7.10.0

    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
    CVE-2023-2831 | CVE-DB