CVE-2024-37157: Discourse

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Discourse is an open-source discussion platform. Prior to version 3.2.3 on the `stable` branch and version 3.3.0.beta4 on the `beta` and `tests-passed` branches, a malicious actor could get the FastImage library to redirect requests to an internal Discourse IP. This issue is patched in version 3.2.3 on the `stable` branch and version 3.3.0.beta4 on the `beta` and `tests-passed` branches. No known workarounds are available.

Affected products

• Discourse Discourse: before 3.2.3 (fixed in 3.2.3); before 3.3.0 (fixed in 3.3.0); version 3.3.0 only

Published 2024-07-03. Last modified 2026-06-17.