CVE-2026-28192 in Addons for Elementor Pro Plugin
Summary
by MITRE • 08/18/2026
Unauthenticated Arbitrary File Upload in Piotnet Addons For Elementor Pro <= 7.1.67 versions.
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Analysis
by VulDB Data Team • 08/18/2026
The vulnerability identified as an unauthenticated arbitrary file upload flaw within the Piotnet Addons for Elementor Pro plugin, affecting versions up to and including 7.1.67, represents a critical security deficiency that allows attackers to execute remote code on targeted web servers without requiring valid credentials. This specific type of vulnerability falls under the Common Weakness Enumeration category CWE-434, which describes an unrestricted upload of file with dangerous content. The core technical flaw stems from insufficient validation and sanitization mechanisms within the plugin's handling of uploaded files. When a user interacts with certain features that accept file uploads, such as importing templates or adding media assets through the admin interface or potentially exposed API endpoints, the application fails to adequately verify the file type, extension, or content structure before storing it on the server filesystem. This lack of rigorous input validation enables an attacker to bypass standard security checks by crafting a malicious payload disguised with a legitimate-looking filename and extension, such as appending .php to a script that would otherwise be rejected if its true nature were detected.
From an operational perspective, this vulnerability has severe implications for web application integrity and server stability. Once the malicious file is successfully uploaded to a writable directory on the target system, typically within the plugin's own upload folder or another accessible location, the attacker gains the ability to execute arbitrary PHP code directly through the browser by navigating to the URL of the uploaded script. This effectively results in Remote Code Execution (RCE), granting the adversary full control over the underlying server environment depending on the privileges under which the web server process operates. The impact extends beyond simple defacement or data theft; it allows for complete system compromise, including the installation of backdoors, deployment of cryptominers, pivoting to internal network segments, and exfiltration of sensitive database contents containing user credentials and personal identifiable information. This aligns with the MITRE ATT&CK technique T1505.003, which involves Server Side Request Forgery or Web Shell components used for persistence and lateral movement within a compromised environment.
The attack vector is particularly dangerous because it requires no authentication, meaning any anonymous visitor to the website can exploit this flaw without prior access privileges. This significantly lowers the barrier to entry for attackers, allowing automated scanning tools and opportunistic scripts to target vulnerable instances at scale across the internet. The presence of such a vulnerability often indicates broader issues in the plugin's development lifecycle regarding secure coding practices, specifically the failure to implement allowlists for permitted file types rather than relying on deny lists or client-side validation which can be easily bypassed using proxy tools like Burp Suite. Furthermore, it highlights potential misconfigurations in web server settings that permit execution of scripts within upload directories, a common secondary vulnerability often exploited in conjunction with arbitrary uploads.
Mitigation strategies must address both the immediate technical flaw and broader security hygiene practices. The primary remediation is to upgrade the Piotnet Addons for Elementor Pro plugin to version 7.1.68 or later, where developers have presumably implemented stricter file validation checks, including MIME type verification using server-side libraries rather than relying solely on extensions, as well as disabling script execution in upload directories via web server configuration directives such as Apache's LimitRequestBody and php.ini settings like disable_functions or open_basedir restrictions. For organizations unable to patch immediately due to compatibility concerns with other plugins, temporary mitigations include manually removing the vulnerable plugin files if not essential, restricting file upload permissions on the filesystem so that only specific non-executable formats are allowed, and configuring Web Application Firewalls (WAF) rules to detect and block requests containing suspicious patterns associated with PHP shell uploads or unusual POST request structures targeting known endpoints. Regular security audits and penetration testing should be conducted to identify similar weaknesses in other third-party components integrated into the WordPress ecosystem, ensuring a defense-in-depth approach that does not rely solely on vendor patches for protection against evolving threat landscapes.