CVE-2024-52794 Magnific lightbox susceptible to Cross-site Scripting in Discourse
Attackers can execute arbitrary scripts in victim browsers via malicious lightbox thumbnails in Discourse, potentially leading to account takeover.
- 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-2024-52794?
CVE-2024-52794 is a medium-severity cross-site scripting vulnerability in Discourse Discourse, published on 19 Dec 2024. 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 platform for community discussion. Users clicking on the lightbox thumbnails could be affected. This problem is patched in the latest version of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-79
Which versions are affected by CVE-2024-52794?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions | 3.3.3 |
Products include Discourse Discourse.
How do I fix CVE-2024-52794?
Upgrade discourse to 3.3.3 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2024-52794 being exploited?
There is no known exploitation of CVE-2024-52794 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
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-2024-52794, GHSA-m3v4-v2rp-hfm9.