CVE-2023-45147 Arbitrary keys can be added to a topic's custom fields by any user in Discourse
Users can add arbitrary custom fields to topics, potentially impacting plugin functionality if specific plugins are installed.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-45147?
CVE-2023-45147 is a medium-severity missing authorization vulnerability in Discourse Discourse, published on 16 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Discourse is an open source community platform. In affected versions any user can create a topic and add arbitrary custom fields to a topic. The severity of this vulnerability depends on what plugins are installed and how the plugins uses topic custom fields. For a default Discourse installation with the default plugins, this vulnerability has no impact. The problem has been patched in the latest version of Discourse. Users are advised to update to version 3.1.1 if they are on the stable branch or 3.2.0.beta2 if they are on the beta branch. Users unable to upgrade should disable any plugins that access topic custom fields.
Weakness: CWE-200
Which versions are affected by CVE-2023-45147?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions to 3.1.1 | None |
Products include Discourse Discourse.
How do I fix CVE-2023-45147?
No fix has been published for CVE-2023-45147 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-45147 being exploited?
There is no known exploitation of CVE-2023-45147 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-2023-45147, GHSA-wm89-m359-f9qv.