CVE-2023-28107: Discourse

Medium severity, CVSS 4.9. EPSS: 0.7% chance of exploitation in the next 30 days.

Discourse is an open-source discussion platform. Prior to version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches, a user logged as an administrator can request backups multiple times, which will eat up all the connections to the DB. If this is done on a site using multisite, then it can affect the whole cluster. The vulnerability is patched in version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.

Affected products

• Discourse Discourse: up to and including 3.0.1; before 3.1.0 (fixed in 3.1.0); version 3.1.0 only

Published 2023-03-17. Last modified 2026-06-17.