CVE-2026-26304CWE-863

Permission Bypass in Playbook Run Creation

Medium · published March 16, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
17.4
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00264 · 17.4th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-03-16T19:53Z
EPSS history
Timeline
  • 16 MAR 19:53Z
    Permission Bypass in Playbook Run Creation
    cvelistv5