Mattermost versions 10.1.x <= 10.1.2, 10.0.x <= 10.0.2, 9.11.x <= 9.11.4, 9.5.x <= 9.5.12 fail to properly validate the type of callProps which allows a user to cause a client side (webapp and mobile) DoS to users of particular channels, by sending a specially crafted post.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/mattermost/mattermost/server/v8(Go) | 10.1.0 | 10.1.3 | N/A |
| github.com/mattermost/mattermost/server/v8(Go) | 10.0.0 | 10.0.3 | N/A |
| github.com/mattermost/mattermost/server/v8(Go) | 9.11.0 | 9.11.5 | N/A |
| github.com/mattermost/mattermost/server/v8(Go) | 9.5.0 | 9.5.13 | N/A |
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