| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-plugin-playbooks | < 1.41.1-0.20260309184833-887d9cacb616 | 1.41.1-0.20260309184833-887d9cacb616 |
| github.com/mattermost/mattermost-server | ≥ 10.11.0+incompatible, < 10.11.14+incompatible≥ 11.4.0+incompatible, < 11.4.4+incompatible≥ 11.5.0+incompatible, < 11.5.2+incompatible | 10.11.14+incompatible11.4.4+incompatible11.5.2+incompatible |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | ≥ 10.11.0, < 10.11.14≥ 11.4.0, < 11.4.4≥ 11.5.0, < 11.5.2all versions | 10.11.1411.4.411.5.2 |
| mattermost server | ≥ 10.11.0, < 10.11.14≥ 11.4.0, < 11.4.4≥ 11.5.0, < 11.5.2 | 10.11.1411.4.411.5.2 |
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check public/private permissions which allows members without these permissions to access public playbooks via /get.. Mattermost Advisory ID: MMSA-2026-00591
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