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Vulnerabilities

Vulnerability · 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.

Published Dec 9, 2025 · catalog updated Oct 14, 2026 · LeptonCMS version 7.3.0 contains

Check if you run it

No confirmed exploitation is on record for CVE-2025-56704. EPSS is 0.77%. Act only if a listed version of LeptonCMS version 7.3.0 contains is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (LeptonCMS version 7.3.0 contains).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.77%
Remediation
Not established
Affected products
cpe 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe lepton-cms/leptoncms7.3.0

How to fix CVE-2025-56704

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-56704. EPSS is 0.77%. Act only if a listed version of LeptonCMS version 7.3.0 contains is installed.

Which versions are affected?

Compare what you have installed with 7.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-434: Unrestricted Upload of File with Dangerous Type. EPSS 0.77%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 9, 2025 · NIST NVD

    Detected

    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.

  2. Oct 14, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-56704

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-56704

    30-day exploitation probability 0.8%

    first.org
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.