Arbitrary file upload in Lepton-Cms Leptoncms
CVE-2025-56704
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.000
Affected products
- Lepton-Cms Leptoncms — versions 7.3.0
Weakness classification (CWE)
References
- lepton.com (Not Applicable)
- github.com/Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_A.pdf (Exploit, Third Party Advisory)
- github.com/Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_B.pdf (Exploit, Third Party Advisory)
- github.com/Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_C.pdf (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-56704?
- CVE-2025-56704 is a high-severity vulnerability in Lepton-Cms Leptoncms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2025-12-09.
- How severe is CVE-2025-56704?
- High severity. CVSS v3 base score is 8.8 out of 10.