LeptonCMS version 7.3.0 contains an arbitrary file upload vulnerability, which is caused…
Priority HIGH 73CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-434.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00766 55th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:lepton-cms:leptoncms:7.3.0:*:*:*:*:*:*:* | 7.3.0 | Vulnerable | Lepton-cms |
- cpe:2.3:a:lepton-cms:leptoncms:7.3.0:*:*:*:*:*:*:* Versions 7.3.0 Vulnerable ·Lepton-cms
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-56704
- 2026-10-03 Alias added: GHSA-pvcf-257h-r9p4
References
More Lepton-cms Leptoncms vulnerabilities
- TI-2024-19482 File Upload vulnerability in lepton v.7.1.0 allows a remote authenticated attackers to… CVSS 3.1HIGH 8.8
- TI-2024-19481 File Upload vulnerability in lepton v.7.1.0 allows a remote authenticated attackers to… CVSS 3.1HIGH 8.8
- TI-2024-16165 An issue in Lepton CMS v.7.0.0 allows a local attacker to execute arbitrary code via the… CVSS 3.1HIGH 7.8
- TI-2024-16106 An arbitrary file upload vulnerability in LEPTON v7.0.0 allows authenticated attackers to… CVSS 3.1HIGH 7.2
- TI-2020-15222 Cross Site Scripting (XSS) vulnerability in backend/pages/modify.php in Lepton-CMS… CVSS 3.1MEDIUM 6.1
- TI-2020-10103 Multiple cross-site scripting (XSS) vulnerabilities exist in LeptonCMS before 4.6.0. CVSS 3.1MEDIUM 6.1
Sources
- CVE-2025-56704 · CVE Program
- CVE-2025-56704 · NVD
- FIRST EPSS
- GHSA-pvcf-257h-r9p4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences