Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Discourse | < 2.7.12 |
Related Weaknesses (CWE)
References
- https://github.com/discourse/discourse/commit/7a8ec129fb54f188b2da6588c9d24d3a36PatchThird Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-59jr-pj65-qmvrExploitThird Party Advisory
- https://github.com/discourse/discourse/commit/7a8ec129fb54f188b2da6588c9d24d3a36PatchThird Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-59jr-pj65-qmvrExploitThird Party Advisory
FAQ
What is CVE-2021-43850?
CVE-2021-43850 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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 vul...
How severe is CVE-2021-43850?
CVE-2021-43850 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-43850?
Check the references section above for vendor advisories and patch information. Affected products include: Discourse Discourse.