CVE-2022-36066: Discourse

High severity, CVSS 7.2. EPSS: 2% 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, admins can upload a maliciously crafted Zip or Gzip Tar archive to write files at arbitrary locations and trigger remote code execution. The problem is patched 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.