CVE-2023-2793

    Dashboard / Vulnerabilities / CVE-2023-2793

    CVE-2023-2793

    Published: 16 Jun 2023Last Modified: 12 Aug 2026

    Summary: Stack exhaustion in PreparePostForClientWithEmbedsAndImages

    Details: Mattermost fails to validate links on external websites when constructing a preview for a linked website, allowing an attacker to cause a denial-of-service by a linking to a specially crafted webpage in a message.

    References: https://mattermost.com/security-updates/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/2xxx/CVE-2023-2793.json, https://nvd.nist.gov/vuln/detail/CVE-2023-2793

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- f14c24391ca84740d90a29ec8b67579326eaa236
    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-2023-2793 | CVE-DB