Discourse is an open-source discussion platform. Between versions 3.1.0.beta2 and 3.1.0.beta3 of the `tests-passed` branch, editing or responding to a chat message containing malicious content could lead to a cross-site scripting attack. This issue is patched in version 3.1.0.beta3 of the `tests-passed` branch. There are no known workarounds.
https://github.com/discourse/discourse/security/advisories/GHSA-ccfc-qpmp-gq87
https://github.com/discourse/discourse/commit/a373bf2a01488c206e7feb28a9d2361b22ce6e70