CVE-2024-1402

    Dashboard / Vulnerabilities / CVE-2024-1402

    CVE-2024-1402

    Published: 9 Feb 2024Last Modified: 28 Oct 2026

    Summary: Denial of service in mattermost mobile apps and server via emoji reactions

    Details: Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post. 

    References: https://mattermost.com/security-updates, https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/1xxx/CVE-2024-1402.json, https://nvd.nist.gov/vuln/detail/CVE-2024-1402

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    v8.1.7-rc3
    v8.1.7
    v8.1.7-rc2
    v8.1.7-rc1
    v8.1.6-rc1
    v8.1.6
    v8.1.5-rc2
    v8.1.5
    v8.1.5-rc1
    v8.1.4-rc2
    v8.1.4
    v8.1.4-rc1
    v8.1.3-rc2
    v8.1.3
    v8.1.3-rc1
    v8.1.2-rc2
    v8.1.2
    v8.1.2-rc1
    v8.1.1-rc2
    v8.1.1
    v8.1.1-rc1
    v8.1.0-rc2
    v8.1.0

    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