CVE-2021-43793 Bypass of Poll voting limits in Discourse
Attackers can bypass voting limits in Discourse polls, allowing multiple votes in single-option polls, compromising data integrity.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-43793?
CVE-2021-43793 is a medium-severity vulnerability in Discourse Discourse, published on 1 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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
Weakness: CWE-269
Which versions are affected by CVE-2021-43793?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions | 2.7.11 |
Products include Discourse Discourse.
How do I fix CVE-2021-43793?
Upgrade discourse to 2.7.11 or later.
Is CVE-2021-43793 being exploited?
There is no known exploitation of CVE-2021-43793 in the wild and no public exploit code.
Other vulnerabilities in Discourse Discourse
- CVE-2021-41163 RCE via malicious SNS subscription payload
- CVE-2022-36066 Discourse vulnerable to RCE via admins uploading maliciously zipped file
- CVE-2022-39356 Discourse user account takeover via email and invite link
- CVE-2023-22468 Discourse vulnerable to Cross-site Scripting in local oneboxes
- CVE-2026-27934 Discourse leaks private topic title and post excerpt via user action API endpoint
Sources
Also known as BIT-discourse-2021-43793, GHSA-jq7h-44vc-h6qx.