CVE-2023-22453 Discourse vulnerable to exposure of user post counts per topic to unauthorized users
Unauthorized users can view the number of posts a specific user made in any topic via the user profile JSON endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-22453?
CVE-2023-22453 is a medium-severity vulnerability in Discourse Discourse, published on 5 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, the number of times a user posted in an arbitrary topic is exposed to unauthorized users through the `/u/username.json` endpoint. The issue is patched in version 2.8.14 and 3.0.0.beta16. There is no known workaround.
Weakness: CWE-200
Which versions are affected by CVE-2023-22453?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions | 2.8.14 |
Products include Discourse Discourse.
How do I fix CVE-2023-22453?
Upgrade discourse to 2.8.14 or later.
Is CVE-2023-22453 being exploited?
There is no known exploitation of CVE-2023-22453 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-2023-22453, GHSA-xx97-6494-p2rv.