Synapse 1.33.2 (2021-05-11) =========================== Due to the security issue highlighted below, server administrators are encouraged to update Synapse. We are not aware of these vulnerabilities being exploited in the wild. Security advisory ----------------- This release fixes a denial of service attack ([CVE-2021-29471](https://github.com/matrix-org/synapse/security/advisories/GHSA-x345-32rc-8h85)) against Synapse's push rules implementation. Server admins are encouraged to upgrade. Internal Changes ---------------- - Unpin attrs dependency. ([\#9946](https://github.com/matrix-org/synapse/issues/9946))