CVE-2021-43793
MEDIUMCVSS 4.3/10EPSS 0.76%
Last modified
CVE-2021-43793 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Discourse is an open source discussion platform. In affected versions a vulnerability in the Polls feature allowed users to vote multiple times in a single-option poll. EPSS estimates a 0.76% chance of exploitation in the next 30 days.
Description
Discourse is an open source discussion platform. In affected versions a vulnerability in the Polls feature allowed users to vote multiple times in a single-option poll. The problem is patched in the latest tests-passed, beta and stable versions of Discourse
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Discourse | Discourse | < 2.7.11 | — |
| Discourse | Discourse | 2.8.0 | Beta1 |
References
- https://github.com/discourse/discourse/commit/0c6b9df77bac9c6f7c7e2eadf6fe100064afdeabPatch, Third Party Advisory
- https://github.com/discourse/discourse/commit/1d0faedfbc3a8b77b971dc70d25e30791dbb6e0bPatch, Third Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-jq7h-44vc-h6qxThird Party Advisory
- https://github.com/discourse/discourse/commit/0c6b9df77bac9c6f7c7e2eadf6fe100064afdeabPatch, Third Party Advisory
- https://github.com/discourse/discourse/commit/1d0faedfbc3a8b77b971dc70d25e30791dbb6e0bPatch, Third Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-jq7h-44vc-h6qxThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-43793?
Discourse is an open source discussion platform. In affected versions a vulnerability in the Polls feature allowed users to vote multiple times in a single-option poll. The problem is patched in the latest tests-passed, beta and stable versions of Discourse
How severe is CVE-2021-43793?
CVE-2021-43793 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43793?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-43793?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST