GHSA-v8wm-g9f2-xjv4
Matrix Synapse Security Filtering Flaw
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| PyPI | matrix-synapse | < 0.31.1 | 0.31.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.