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Nicepage 4.16.0 Exploit Access

Our team contacted Nicepage support on February 15, 2026. Initially, they classified the reports as "low severity" because the exploit requires authenticated access for the path traversal. However, after public disclosure by security researcher Jeremy Trinka on March 1, 2026, Nicepage released version with the following fixes:

[Attacker Payload] ──> [Unsanitized Input in Nicepage 4.16.0] ──> [Server Executes File] │ ┌────────────────────────────────┴────────────────────────────────┐ ▼ ▼ [Remote Code Execution (RCE)] [Cross-Site Scripting (XSS)] 1. Arbitrary File Upload & Remote Code Execution (RCE)

: Past versions struggled with sanitizing HTML code inside contact form submissions, which could lead to malformed email content or potential script execution. Version History & Context nicepage 4.16.0 exploit

Nicepage variants near this release window featured evolving code blocks designed to capture customer feedback data, handle translation matrices, and route mail arrays.

Understanding the Nicepage Ecosystem and Vulnerability Matrix Our team contacted Nicepage support on February 15, 2026

Introduced a feature allowing users to lock elements within the editor to prevent accidental movement.

If file upload restrictions are not properly validated in the PHP backend, a user could upload a malicious file (e.g., a .php script) instead of an allowed image or document type. Arbitrary File Upload & Remote Code Execution (RCE)

If you are still running Nicepage 4.16.0 or any older version, the most effective "exploit" mitigation is to modernize your installation.

When an environment maintains an active deployment of Nicepage 4.16.0, it leaves the broader host site exposed to several escalating automated threats:

Based on search results, there are no specific, publically documented remote code execution (RCE) exploits for Nicepage version 4.16.0. However, security analyses have highlighted general security concerns regarding file upload functionalities and path exposure in various Nicepage versions.

Nicepage operates as both a standalone desktop application and a CMS plugin. When deployed as a WordPress plugin or Joomla extension, it requires direct filesystem write permissions to generate layouts, handle contact form elements, and render custom CSS/JS assets.