CVE-2023-37904 Discourse Race Condition in Accept Invite
Attackers can bypass invite limits to create unauthorized accounts in Discourse forums, requiring an upgrade to patched versions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-37904?
CVE-2023-37904 is a low-severity vulnerability in Discourse Discourse, published on 28 Jul 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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, more users than permitted could be created from invite links. 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. As a workaround, use restrict to email address invites.
Weakness: CWE-362
Which versions are affected by CVE-2023-37904?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions | 3.0.6 |
Products include Discourse Discourse.
How do I fix CVE-2023-37904?
Upgrade discourse to 3.0.6 or later.
Is CVE-2023-37904 being exploited?
There is no known exploitation of CVE-2023-37904 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-2023-37904, GHSA-6wj5-4ph2-c7qg.