CVE-2025-59337 Discourse: Cross-Site Data Exposure via Backup Restore Metacommand Injection in Multisite Deployments
Malicious meta-commands in backup files allow admins to access data from other sites in multisite Discourse deployments.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-59337?
CVE-2025-59337 is a medium-severity command injection vulnerability in Discourse Discourse, published on 1 Oct 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Discourse is an open-source community discussion platform. In versions 3.5.0 and below, malicious meta-commands could be embedded in a backup dump and executed during restore. In multisite setups, this allowed an admin of one site to access data or credentials from other sites. This issue is fixed in version 3.5.1.
Weakness: CWE-77
Which versions are affected by CVE-2025-59337?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions | 3.5.1 |
Products include Discourse Discourse.
How do I fix CVE-2025-59337?
Upgrade discourse to 3.5.1 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-59337 being exploited?
There is no known exploitation of CVE-2025-59337 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-2025-59337, GHSA-7xjr-4f4g-9887.