PT-2026-25810 · Mattermost · Mattermost

0X7Oda7123 · Published 2026-03-16 · Updated 2026-03-16 · CVE-2026-26304

NVD

CVSS v3.1

4.3

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2 fail to verify run create permission for empty playbookId, which allows team members to create unauthorized runs via the playbook run API. Mattermost Advisory ID: MMSA-2025-00542

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-26304

Affected Products

Mattermost

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-26304 · Security Note
• https://mattermost.com/security-updates · Vendor Advisory