GitHub Advisoryadvisory · Go

GHSA-4pmx-622h-x359 Mattermost fails to verify run_create permission for empty playbookId

MEDIUM Published 2026-03-16 Modified 2026-03-20 Official page ↗
Aliases
CVE-2026-26304
Ecosystem
Go
Packages
github.com/mattermost/mattermost-plugin-playbooks
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-863
Reviewed
2026-03-20

Affected packages

• Go github.com/mattermost/mattermost-plugin-playbooks: < 1.41.1-0.20260316224925-705f54a81841 → fixed in 1.41.1-0.20260316224925-705f54a81841

Description

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

Related

Alias · CVE (1)

  • CVE-2026-26304 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… vulnerability

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References