| Package | Affected versions | Patched versions |
|---|---|---|
| matrix-synapse | < 1.120.1 | 1.120.1 |
| synapse | < 1.120.1 | 1.120.1 |
Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality.
Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.
Server administrators can disable federation from untrusted servers.
If you have any questions or comments about this advisory, please email us at security at element.io.
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