CVE-2024-35227: Discourse

High severity, CVSS 7.5. EPSS: 0.6% 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.beta3 on the `tests-passed` branch, Oneboxing against a carefully crafted malicious URL can reduce the availability of a Discourse instance. The problem has been patched in version 3.2.3 on the `stable` branch and version 3.3.0.beta3 on the `tests-passed` branch. There are no known workarounds available for this vulnerability.

Affected products

• Discourse Discourse: up to and including 3.2.2

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