CVE-2021-41140: Discourse Reactions

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

Discourse-reactions is a plugin for the Discourse platform that allows user to add their reactions to the post. In affected versions reactions given by user to secure topics and private messages are visible. This issue is patched in version 0.2 of discourse-reaction. Users who are unable to update are advised to disable the Discourse-reactions plugin in admin panel.

Affected products

• Discourse Discourse Reactions: before 0.2 (fixed in 0.2)

Published 2021-10-19. Last modified 2026-06-17.