| Package | Affected versions | Patched versions |
|---|---|---|
| mattermost server | ≥ 11.10.0, < 11.10.2≥ 11.7.0, < 11.7.11≥ 11.8.0, < 11.8.6≥ 11.9.0, < 11.9.2 | 11.10.211.7.1111.8.611.9.2 |
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 Mattermost fail to apply allocation limits to the byte-string decode paths in its WebSocket msgpack decoder, which allows an authenticated remote attacker to cause excessive server memory allocation via a crafted binary WebSocket frame declaring a Bin32 payload length of up to 4,294,967,295 bytes.. Mattermost Advisory ID: MMSA-2026-00768
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free