- [GHSA-mp92-3jfm-3575](https://github.com/matrix-org/synapse/security/advisories/GHSA-mp92-3jfm-3575) / [CVE-2023-43796](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43796) — Moderate Severity

  Cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver.

See the advisory for more details. If you have any questions, email security@matrix.org.