| Package | Affected versions | Patched versions |
|---|---|---|
| matrix-synapse | ≥ 0.33.3, < 0.33.3.1< 0.33.2.1 | 0.33.3.10.33.2.1 |
| synapse | < 0.33.3.1 | 0.33.3.1 |
Matrix Synapse before 0.33.3.1 and 0.33.2.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation.
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