CVE-2025-56704 File upload in n/a
An authenticated attacker can upload malicious files to LeptonCMS to execute arbitrary code on the server.
- 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-2025-56704?
CVE-2025-56704 is a high-severity vulnerability in n/a, published on 9 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
LeptonCMS version 7.3.0 contains an arbitrary file upload vulnerability, which is caused by the lack of proper validation for uploaded files. An authenticated attacker can exploit this vulnerability by uploading a specially crafted ZIP/PHP file to execute arbitrary code.
Weakness: CWE-434
Which versions are affected by CVE-2025-56704?
It affects 1 product.
Products include Lepton-Cms Leptoncms.
How do I fix CVE-2025-56704?
No fix has been published for CVE-2025-56704 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-56704 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-56704 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-pvcf-257h-r9p4.