CVE-2023-31142: 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 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches, if a site has modified their general category permissions, they could be set back to the default. This issue is patched in version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches. A workaround, only if you are modifying the general category permissions, is to use a new category for the same purpose.

Affected products

• Discourse Discourse: before 3.0.4 (fixed in 3.0.4); version 3.1.0 only

Published 2023-06-13. Last modified 2026-06-17.