CVE-2026-107866 in JetElements Plugin
Summary
by MITRE • 10/12/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Crocoblock JetElements For Elementor jet-elements allows Stored XSS.This issue affects JetElements For Elementor: from n/a through 2.9.2.3.
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Analysis
by VulDB Data Team • 10/12/2026
The identified security flaw represents a classic instance of Improper Neutralization of Input During Web Page Generation, commonly known as Cross-Site Scripting or XSS. Specifically, this vulnerability manifests as a Stored XSS within the Crocoblock JetElements plugin for Elementor, affecting versions ranging from its initial release through version 2.9.2.3. Unlike reflected XSS attacks where malicious scripts are embedded in URLs and executed only when a victim clicks a specially crafted link, stored XSS vulnerabilities persist on the target server. In this context, an attacker can inject malicious JavaScript code into input fields or content areas managed by JetElements. This injected payload is then saved to the database and subsequently served to other users who view the affected page, ensuring that every visitor loading the compromised content will execute the arbitrary script in their browser environment.
From a technical perspective, the root cause lies in insufficient validation and sanitization of user-supplied data before it is rendered within HTML contexts by the WordPress application. When JetElements processes input for widgets or elements, it fails to properly escape special characters such as angle brackets, quotes, and ampersands that are critical for breaking out of safe HTML attributes or script blocks. This lack of proper encoding allows an attacker to inject executable JavaScript code directly into the DOM structure of a webpage. The vulnerability is particularly severe because it does not require complex social engineering tactics beyond convincing a user with administrative privileges or sufficient editing rights to save content containing the malicious payload, after which the attack becomes persistent and automated against all subsequent viewers.
The operational impact of this Stored XSS vulnerability extends far beyond simple defacement or alert boxes. Attackers can leverage the executed script to perform session hijacking by stealing administrator cookies, thereby gaining full control over the WordPress dashboard without needing valid credentials. This level of access allows for complete compromise of the website's integrity and confidentiality. Furthermore, attackers may deploy keyloggers to capture sensitive information entered into forms, redirect users to phishing sites designed to steal login details from visitors, or distribute malware by injecting malicious iframes that exploit browser vulnerabilities in end-user systems. The persistence of this attack vector means that even after the initial injection is discovered, the damage continues as long as the compromised content remains on the server and unpatched versions are still being served to users.
This vulnerability aligns with CWE-79, which categorizes Improper Neutralization of Input During Web Page Generation: Cross-site Scripting, highlighting the failure to neutralize user input before inclusion in web pages. In terms of offensive security frameworks, this flaw facilitates techniques described under MITRE ATT&CK ID T1059, specifically Command and Scripting Interpretation via JavaScript within a browser context. It also relates to T1078, Valid Accounts, as the stored payload often requires initial access through legitimate user credentials with editing capabilities. The persistence of the attack vector makes it particularly dangerous for long-term security posture, as it transforms a single entry point into a continuous threat mechanism embedded in the site's content itself.
Mitigation strategies must focus on immediate remediation and future prevention. Administrators running affected versions of JetElements should update to version 2.9.2.4 or later immediately, where this input validation issue has been addressed by the vendor through enhanced sanitization routines. For organizations unable to patch instantly due to compatibility concerns with other plugins, implementing a Web Application Firewall (WAF) can provide temporary protection by filtering out malicious payloads containing common XSS signatures before they reach the application logic. Additionally, enforcing strict Content Security Policy headers that restrict script execution sources can significantly reduce the impact of any successful injection attempts. Long-term security hygiene should include regular audits of third-party plugin code for proper input handling practices and ensuring that all user inputs are consistently escaped using context-aware encoding methods such as HTML entity encoding when rendered in DOM-based contexts.