| Package | Affected versions | Patched versions |
|---|---|---|
| mattermost server | ≥ 10.11.0, < 10.11.12≥ 11.2.0, < 11.2.4≥ 11.3.0, < 11.3.2≥ 11.4.0, < 11.4.1 | 10.11.1211.2.411.3.211.4.1 |
Mattermost Plugins versions <=11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free