CVE-2022-39226: Discourse

Medium severity, CVSS 4.3. EPSS: 1% chance of exploitation in the next 30 days.

Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, a malicious actor can add large payloads of text into the Location and Website fields of a user profile, which causes issues for other users when loading that profile. A fix to limit the length of user input for these fields is included in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.

Affected products

• Discourse Discourse: before 2.8.9 (fixed in 2.8.9); version 2.9.0 only

Published 2022-09-29. Last modified 2026-06-17.