CVE-2023-47121: Discourse

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, the embedding feature is susceptible to server side request forgery. The issue is patched in version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches. As a workaround, disable the Embedding feature.

Affected products

• Discourse Discourse: before 3.1.3 (fixed in 3.1.3); before 3.2.0 (fixed in 3.2.0); version 3.2.0 only

Published 2023-11-10. Last modified 2026-06-17.