CVE-2026-39778 in Ansar Import Plugin
Summary
by MITRE • 10/06/2026
Unauthenticated Cross Site Scripting (XSS) in Ansar Import – One Click Starter Sites – for Elementor & Themes <= 2.1.2 versions.
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Analysis
by VulDB Data Team • 10/06/2026
The vulnerability identified as an unauthenticated cross-site scripting flaw within the Ansar Import plugin, specifically affecting versions up to and including 2.1.2, represents a significant security risk for WordPress environments utilizing Elementor page builder integrations or associated theme frameworks. This class of vulnerability allows remote attackers to inject malicious client-side scripts into web pages viewed by other users without requiring any form of authentication or prior login credentials. The absence of an access control mechanism means that the attack vector is publicly accessible, enabling anyone on the internet with a basic understanding of HTTP requests and browser execution contexts to exploit this weakness. This characteristic significantly lowers the barrier for entry, allowing non-technical attackers or automated botnets to target vulnerable installations en masse rather than requiring targeted social engineering or credential theft.
From a technical perspective, the flaw typically stems from insufficient input validation and output encoding within the plugin's handling of user-supplied data during the site importation process or related configuration endpoints. When the application processes inputs intended for theme customization or starter site selection parameters, it fails to properly sanitize special characters such as angle brackets, quotes, and ampersands before rendering them in the browser context. Consequently, an attacker can craft a malicious payload containing JavaScript code embedded within these input fields. Upon execution by the victim's web browser, this script runs with the same privileges as legitimate application scripts, effectively bypassing the Same-Origin Policy that normally restricts how documents interact with each other. This behavior aligns directly with Common Weakness Enumeration identifier CWE-79, which classifies improper neutralization of input during web page generation as a primary cause for cross-site scripting vulnerabilities.
The operational impact of this vulnerability is severe due to its unauthenticated nature and the high privilege levels often associated with WordPress administrative interfaces or user profiles that may be compromised through session hijacking facilitated by XSS. An attacker can execute arbitrary JavaScript in the context of the victim's browser, which enables a wide range of malicious activities including stealing administrator cookies and authentication tokens, redirecting users to phishing sites designed to capture credentials, defacing the website content for reputational damage, or deploying further malware such as cryptominers or ransomware loaders. In environments where multiple user roles exist, this vulnerability can serve as an initial foothold for privilege escalation if administrative sessions are compromised. The persistence of malicious scripts injected into stored XSS vectors means that every subsequent visit to the affected page by any user triggers the attack, amplifying the blast radius significantly beyond a single interaction.
This incident maps closely to several tactics within the MITRE ATT&CK framework, particularly those related to Client-Side Scripting and Collection techniques such as Cookie Stealing or Keylogging if keyloggers are injected via DOM manipulation. The exploitation path often involves crafting specific HTTP requests that target the plugin's API endpoints responsible for processing import configurations. Security researchers have noted that plugins handling file uploads or complex data structures like starter site templates frequently contain logic errors where trusted contexts are assumed incorrectly, leading to these injection points. The lack of Content Security Policy enforcement in many default WordPress installations further exacerbates the risk by allowing inline script execution unless explicitly restricted by server-side headers which may not be configured for all sites running this plugin version.
Mitigation strategies must prioritize immediate remediation through software updates and defensive configuration changes. Administrators should upgrade to a patched version of the Ansar Import plugin as soon as it becomes available from the official repository or vendor, ensuring that input sanitization logic has been corrected by the developers. In cases where an update is not immediately feasible due to compatibility concerns with other plugins or themes, temporary workarounds include implementing strict Content Security Policy headers at the web server level to restrict inline script execution and disable unsafe eval functions. Additionally, deploying a Web Application Firewall can help detect and block common XSS payloads by analyzing request patterns for suspicious characters such as <script> tags or event handler attributes like onerror or onload within query parameters and POST bodies. Regular security audits and code reviews focusing on data flow from user inputs to HTML output are essential preventive measures against similar vulnerabilities in future development cycles, ensuring that the principle of least privilege and defense-in-depth is maintained across all application layers.