CVE-2023-34250 Discourse vulnerable to exposure of number of topics recently created in private categories
An attacker can reveal the number of recently created topics in private categories they lack access to, exposing metadata about restricted content.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-34250?
CVE-2023-34250 is a medium-severity vulnerability in Discourse Discourse, published on 13 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Discourse is an open source discussion platform. Prior to version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches, an attacker could use the new topics dismissal endpoint to reveal the number of topics recently created (but not the actual content thereof) in categories they didn't have access to. This issue is patched in version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches. There are no known workarounds.
Which versions are affected by CVE-2023-34250?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions | 3.0.4 |
Products include Discourse Discourse.
How do I fix CVE-2023-34250?
Upgrade discourse to 3.0.4 or later.
Is CVE-2023-34250 being exploited?
There is no known exploitation of CVE-2023-34250 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-2023-34250, GHSA-q8m5-wmjr-3ppg.