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GHSA-4pmx-622h-x359

Mattermost fails to verify run_create permission for empty playbookId

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-26304

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost-plugin-playbooks < 1.41.1-0.20260316224925-705f54a81841 1.41.1-0.20260316224925-705f54a81841

Details

As written in the advisory (Markdown source, shown as plain text).

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

References

External links from the advisory. They lead to third-party sites.