| Package | Affected versions | Patched versions |
|---|---|---|
| discourse | = 2.9.0< 2.8.10 | 2.8.10 |
Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single email address can enter any non-admin user's email and gain access to their account when accepting the invitation. All users should upgrade to the latest version. A workaround is temporarily disabling invitations with `SiteSetting.max_invites_per_day = 0` or scope them to individual email addresses.
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