CVE-2025-48062 Information

Description

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the stable branch version 3.5.0.beta5 of the beta branch and version 3.5.0.beta6-dev of the tests-passed branch certain invites via email may result in HTML injection in the email body if the topic title includes HTML. This includes inviting someone (without an account) to a PM and inviting someone (without an account) to a topic with a custom message. This issue is patched in version 3.4.4 of the stable branch version 3.5.0.beta5 of the beta branch and version 3.5.0.beta6-dev of the tests-passed branch. This can be worked around if the relevant templates are overridden without topic_title.

Reference

https://github.com/discourse/discourse/security/advisories/GHSA-x8mp-chx3-6x2p