The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Suse | — | Upgrade python2-matrix-synapseUpgrade python3-matrix-synapse | Jun 21, 2018 | Jun 13, 2018 |
| Ubuntu | — | Upgrade matrix-synapse (Ubuntu Pro) | May 17, 2023 | Jun 13, 2018 |
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