CVE-2025-56704
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk46th percentile - higher than 46% of all known CVEs
Summary
LeptonCMS version 7.3.0 contains an arbitrary file upload vulnerability due to lack of proper validation for uploaded files. An authenticated attacker can exploit this by uploading a specially crafted ZIP/PHP file to execute arbitrary code.
Risk Assessment
The risk involves potential remote code execution by an authenticated attacker, which could lead to server compromise and breach of data confidentiality, integrity, and availability.
Recommendation
It is recommended to immediately update LeptonCMS to the latest version and implement file type and content validation mechanisms.
Related vulnerabilities
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In the OrdaSoft Joomla Gallery extension for Joomla versions below 6.2.7, an authenticated privileged remote code execution vulnerability was found. The saveWatermark() function copies an uploaded file to a web-accessible directory using the client-supplied filename exactly as sent, with no extension check, content check, or filename sanitization. An authenticated core.manage user could upload a .php file disguised with an image Content-Type header and execute it directly by requesting the resulting path.
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Original NVD description (English source)
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.

