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OpenAdvisories
Medium · 6.8 CVE-2021-43850 EUVD-2021-30719

Denial of Service in discourse

Published Jan 4, 2022 · Updated Apr 22, 2025 · Assigned by GitHub_M

Description

Discourse is an open source platform for community discussion. In affected versions admins users can trigger a Denial of Service attack via the `/message-bus/_diagnostics` path. The impact of this vulnerability is greater on multisite Discourse instances (where multiple forums are served from a single application server) where any admin user on any of the forums are able to visit the `/message-bus/_diagnostics` path. The problem has been patched. Please upgrade to 2.8.0.beta10 or 2.7.12. No workarounds for this issue exist.

Affected products

VendorProductAffectedFixed
discourse discourse < 2.7.12, >= 2.8.0.beta, < 2.8.0.beta10 —

References