| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-server | ≥ 9.5.0+incompatible, < 9.5.7+incompatible≥ 9.7.0+incompatible, < 9.7.6+incompatible≥ 9.8.0+incompatible, < 9.8.1+incompatible≥ 9.9.0+incompatible, < 9.9.1+incompatible | 9.5.7+incompatible9.7.6+incompatible9.8.1+incompatible9.9.1+incompatible |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | ≥ 9.5.0, < 9.5.7≥ 9.7.0, < 9.7.6≥ 9.8.0, < 9.8.1≥ 9.9.0, < 9.9.1all versions | 9.5.79.7.69.8.19.9.1 |
| mattermost | = 9.9.0≥ 9.5.0, < 9.5.7≥ 9.7.0, < 9.7.6≥ 9.8.0, < 9.8.2 | 9.5.79.7.69.8.2 |
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.
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