CVE-2025-51511 Cadmium CMS has a background arbitrary file upload vulnerability
An attacker can upload arbitrary files to the admin file manager, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-51511?
CVE-2025-51511 is a critical vulnerability in n/a, published on 23 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cadmium CMS v.0.4.9 has a background arbitrary file upload vulnerability in /admin/content/filemanager/uploads.
Weakness: CWE-434
Which versions are affected by CVE-2025-51511?
2 open source packages ship an affected version, including cadmium-org/cadmium-cms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
cadmium-org/cadmium-cms Packagist | All versions to 0.4.9 | None |
cadmium-org/cadmium-cms Packagist | All versions to 0.4.9 | None |
Products include Cadmium-Cms Cadmium Cms.
How do I fix CVE-2025-51511?
No fix has been published for CVE-2025-51511 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-51511 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51511 exists.
Sources
Also known as GHSA-qx44-p258-3c2v.