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Vulnerability record · CVE-2025-56704 · published 9 December 2025

CVE-2025-56704: Lepton-cms leptoncms unrestricted file upload vulnerability

Lepton Cms · Leptoncms

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.

8.8 CVSS 3.1 High EPSS 0.77% · top 46.3% CWE-434 · Unrestricted file upload
8.8CVSS 3.1 base score
0.77%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 3 tagged exploit
5 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_A.pdf ExploitThird Party Advisory
https://github.com/Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_B.pdf ExploitThird Party Advisory
https://github.com/Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_C.pdf ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2024-29514Lepton-cms leptoncms unrestricted file upload vulnerabilityFile Upload vulnerability in lepton v.7.1.0 allows a remote authenticated attackers to execute arbitrary code via uploading a crafted PHP file.EPSS 1.3%8.8CVE-2024-29515Lepton-cms leptoncms unrestricted file upload vulnerabilityFile Upload vulnerability in lepton v.7.1.0 allows a remote authenticated attackers to execute arbitrary code via uploading a crafted PHP file to the…EPSS 1.2%7.8CVE-2024-24520Lepton-cms leptoncms code injection vulnerabilityAn issue in Lepton CMS v.7.0.0 allows a local attacker to execute arbitrary code via the upgrade.php file in the languages place.EPSS 0.42%7.2CVE-2024-24399Lepton-cms leptoncms unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in LEPTON v7.0.0 allows authenticated attackers to execute arbitrary PHP code by uploading this code to the ba…EPSS 16%6.1CVE-2020-24872Lepton-cms leptoncms cross-site scripting vulnerabilityCross Site Scripting (XSS) vulnerability in backend/pages/modify.php in Lepton-CMS version 4.7.0, allows remote attackers to execute arbitrary code.EPSS 0.51%6.1CVE-2020-12705Lepton-cms leptoncms cross-site scripting vulnerabilityMultiple cross-site scripting (XSS) vulnerabilities exist in LeptonCMS before 4.6.0.EPSS 0.64%4.8CVE-2020-29240Lepton-cms leptoncms cross-site scripting vulnerabilityLepton-CMS 4.7.0 is affected by cross-site scripting (XSS). An attacker can inject the XSS payload in the URL field of the admin page and each time a…EPSS 1.7%10.0CVE-2026-56291Balbooa Forms Joomla extension unauthenticated arbitrary file upload RCEThe Balbooa Forms extension for Joomla before version 2.4.1 accepts file uploads without authentication and does not restrict file type, allowing exe…KEVEPSS 15%analysed

Source: NIST National Vulnerability Database (record CVE-2025-56704), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.