CVE-2022-46148: Discourse

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the `stable` branch and versions 2.9.0.beta11 and prior on the `beta` and `tests-passed` branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.

Affected products

• Discourse Discourse: up to and including 2.8.10; version 2.9.0 only

Published 2022-11-29. Last modified 2026-06-17.