CVE-2026-114708 in JetSmartFilters Plugin
Summary
by MITRE • 10/26/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Crocoblock JetSmartFilters jet-smart-filters allows Stored XSS.This issue affects JetSmartFilters: from n/a through 3.8.6.1.
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Analysis
by VulDB Data Team • 10/26/2026
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 JetSmartFilters plugin for WordPress, affecting versions ranging from its initial release through version 3.8.6.1. Unlike reflected XSS attacks where malicious scripts are executed via manipulated URLs in real-time, stored vulnerabilities involve the persistence of malicious input on the target server. In this context, an attacker can inject executable JavaScript code into fields or inputs managed by JetSmartFilters, which is then saved to the database and subsequently served to other users when they view the affected content. This mechanism ensures that every user who accesses the compromised page will execute the injected script in their browser session under the security context of the vulnerable website.
From a technical perspective, the root cause lies in insufficient sanitization or validation of user-supplied data before it is rendered within HTML responses. The JetSmartFilters plugin likely fails to properly escape special characters such as angle brackets, quotes, and ampersands when processing filter configurations, search queries, or custom field inputs. When this untrusted input is later retrieved from the database and displayed on a public-facing page without adequate encoding, the browser interprets the embedded script tags as legitimate code. This failure to neutralize dangerous payloads allows for arbitrary JavaScript execution, which can be leveraged by attackers to perform a variety of malicious actions including session hijacking, credential theft, defacement of web pages, or redirection of users to phishing sites.
The operational impact of this vulnerability is significant due to its stored nature and the widespread adoption of WordPress in conjunction with Crocoblock plugins for e-commerce and complex filtering interfaces. Because the payload persists on the server, a single successful injection can compromise numerous visitors without requiring further interaction from the attacker beyond the initial setup. This leads to potential data exfiltration where sensitive user information such as session cookies, authentication tokens, or personally identifiable information is stolen via malicious scripts that send this data back to an external command and control server. Furthermore, attackers may use this access to alter site content dynamically, damaging brand reputation and trust among users who expect secure interactions with the platform.
In terms of industry classification standards, this vulnerability aligns directly with CWE-79: Improper Neutralization of Input During Web Page Generation Cross-site Scripting. The attack vector typically falls under ATT&CK technique T1059.007: JavaScript, which describes how adversaries use browser-based scripting languages to execute malicious actions on client-side systems. Additionally, the persistence aspect relates to CWE-832: Triggerable Non-Exclusive Lock Race and potentially CWE-642: External Control of Critical State Data if the stored data influences critical application logic beyond mere display. The exploitation often involves social engineering or direct injection through administrative interfaces if input validation is lax across both front-end user inputs and back-end configuration settings.
Mitigation strategies must prioritize immediate remediation by updating the JetSmartFilters plugin to a version later than 3.8.6.1 where these sanitization issues have been addressed by the developers. Until an update is applied, administrators should implement strict input validation rules on any custom code integrated with the filter system and consider deploying Web Application Firewalls that can detect and block common XSS payloads in HTTP requests. It is also advisable to enforce Content Security Policy headers within the web server configuration to restrict the execution of inline scripts and limit script sources to trusted domains, thereby reducing the impact even if an injection attempt succeeds. Regular security audits and penetration testing focused on input handling mechanisms are essential for maintaining long-term resilience against such persistent threats in dynamic web applications.