| Package | Affected versions | Patched versions |
|---|---|---|
| mattermost | ≥ 9.10.0, < 9.10.1≥ 9.5.0, < 9.5.8 | 9.10.19.5.8 |
Mattermost versions 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 fail to enforce proper access controls which allows any authenticated user, including guests, to mark any channel inside any team as read for any user.
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