CVE Feed

    Dashboard / CVE / CVE-2026-13411

    CVE-2026-13411

    Mattermost versions 11.7.x <= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709

    Published:Oct 22, 2026
    Last Modified:Oct 22, 2026
    EPS:Oct 22, 2026
    EPSS Score:
    CVSS Score:4.3

    Affected Products

    Vendor
    Mattermost
    Product
    Mattermost

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-93851 (CVSS 8) — Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10 fail to validate the target post ID …
    CVE-2026-93846 (CVSS 3.8) — Mattermost versions 11.7.x <= 11.7.10 fail to restrict which built-in roles can be assigned to a team member v…
    CVE-2026-93848 (CVSS 2.7) — Mattermost versions 11.7.x <= 11.7.10 fail to apply outbound internal-connection filtering to the OpenID disco…
    CVE-2026-93850 (CVSS 6.5) — Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to bind the…
    CVE-2026-93849 (CVSS 6.5) — Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 Mattermost fail …
    CVE-2026-93847 (CVSS 3.5) — Mattermost versions 11.7.x <= 11.7.10 fail to validate reserved system post types on the scheduled post creati…
    CVE-2026-116516 (CVSS 6.5) — Mattermost versions <=11.9 11.1.9 11.5.8 11.10.7.0 fail to validate Zoom chat line length before slicing which…
    CVE-2026-18799 (CVSS 4.3) — Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to restrict …
    CVE-2026-16251 (CVSS 6.5) — Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to limit the…
    CVE-2026-18256 (CVSS 4.3) — Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to properly …

    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