| Package | Affected versions | Patched versions |
|---|---|---|
| mattermost | ≥ 9.5.0, < 9.5.6≥ 9.6.0, < 9.6.3≥ 9.7.0, < 9.7.4≥ 9.8.0, < 9.8.1 | 9.5.69.6.39.7.49.8.1 |
Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts
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