Discourse is an open source discussion platform. Prior to version 3.0.6 of the stable
branch and version 3.1.0.beta7 of the beta
and tests-passed
branches, in multiple controller actions, Discourse accepts limit params but does not impose any upper bound on the values being accepted. Without an upper bound, the software may allow arbitrary users to generate DB queries which may end up exhausting the resources on the server. The issue is patched in version 3.0.6 of the stable
branch and version 3.1.0.beta7 of the beta
and tests-passed
branches. There are no known workarounds for this vulnerability.