CVE-2025-32376: Discourse

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Discourse is an open-source discussion platform. Prior to versions 3.4.3 on the stable branch and 3.5.0.beta3 on the beta branch, the users limit for a DM can be bypassed, thus giving the ability to potentially create a DM with every user from a site in it. This issue has been patched in stable version 3.4.3 and beta version 3.5.0.beta3.

Affected products

• Discourse Discourse: before 3.4.3 (fixed in 3.4.3); version 1.1.0 only; version 1.2.0 only; version 1.3.0 only; version 1.4.0 only; version 1.5.0 only; …

Published 2025-04-30. Last modified 2026-06-17.