| Package | Affected versions | Patched versions |
|---|---|---|
| mattermost server | ≥ 11.6.0, < 11.6.5≥ 11.7.0, < 11.7.3 | 11.6.511.7.3 |
Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4 fail to verify whether a guest account is deactivated before creating a session in the magic-link token login path, which allows a deactivated guest user to obtain a fully functional session via a magic-link token issued prior to deactivation.. Mattermost Advisory ID: MMSA-2026-00681
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