Description

Unauthenticated Arbitrary File Upload in Piotnet Addons For Elementor Pro <= 7.1.67 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.6",
  "pubDate": "2026-08-18T14:17:02.197Z",
  "pubdate": "2026-08-18T14:17:02.197Z",
  "executiveSummary": "An unauthenticated arbitrary file upload vulnerability has been identified in Piotnet Addons For Elementor Pro versions <= 7.1.67. This security flaw allows remote, unauthenticated threat actors to upload arbitrary files to the underlying web server hosting the vulnerable WordPress plugin. The primary impact of successful exploitation includes remote code execution (RCE), complete system compromise, unauthorized access to sensitive application data, and potential lateral movement within the network infrastructure.\nThe vulnerability stems from improper validation and handling of user-supplied file inputs within the affected plugin components. Because the attack vector does not require prior authentication or privileged access, external attackers can interact directly with the exposed endpoint to deliver malicious payloads, such as web shells. The risk implications are critical, as exploitation can bypass standard perimeter security controls and result in full administrative takeover of the affected WordPress instance. Mitigation requires immediate action, specifically updating the Piotnet Addons For Elementor Pro plugin beyond the affected version threshold to remediate the insecure file upload functionality.",
  "technicalDetails": "The vulnerability resides within the file upload handling mechanisms of Piotnet Addons For Elementor Pro <= 7.1.67. Specifically, the vulnerable component fails to adequately validate file extensions, MIME types, or structural signatures of uploaded payloads before storing them in publicly accessible directories on the web server. The root cause is a lack of rigorous input sanitization and authorization checks, enabling unauthenticated HTTP requests to interact directly with the file processing functions.\nThe attack flow begins when an unauthenticated threat actor sends a specially crafted HTTP POST request targeting the vulnerable endpoint exposed by the plugin. This request includes a multipart payload containing a malicious file, such as a PHP-based web shell. Due to the absence of proper restriction mechanisms, the application accepts the file and writes it to a predictable directory within the web root without stripping executable permissions or renaming the file securely.\nOnce the file is successfully uploaded, the attacker can execute the payload by issuing a direct HTTP GET request to the file path of the newly uploaded script via the browser or command-line tools. This execution occurs within the security context of the web server user, yielding remote code execution capabilities. Post-exploitation impact includes the ability to read and modify application source code, access database credentials stored in configuration files, pivot to internal network segments, and establish persistent access mechanisms via backdoors."
}