CVE-2022-21642: Discourse

Medium severity, CVSS 4.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Discourse is an open source platform for community discussion. In affected versions when composing a message from topic the composer user suggestions reveals whisper participants. The issue has been patched in stable version 2.7.13 and beta version 2.8.0.beta11. There is no workaround for this issue and users are advised to upgrade.

Affected products

• Discourse Discourse: before 2.7.13 (fixed in 2.7.13); version 2.8.0 only

Published 2022-01-05. Last modified 2026-06-17.