CVE-2026-112840 in SureCart Plugin
Summary
by MITRE • 10/20/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Brainstorm Force SureCart surecart allows Stored XSS.This issue affects SureCart: from n/a through 4.9.5.
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Analysis
by VulDB Data Team • 10/20/2026
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 SureCart plugin ecosystem for WordPress environments. Unlike reflected XSS attacks where malicious scripts are executed via immediate user interaction with a crafted link, stored vulnerabilities persist on the target server. In this context, an attacker can inject malicious JavaScript code into data fields that are subsequently saved in the application's database or persistent storage mechanisms managed by SureCart. When other users, including administrators or customers, access pages containing this tainted data, the browser executes the embedded script within their session context. This persistence distinguishes it from transient attacks and significantly amplifies its potential for widespread impact across a WordPress installation.
The technical root cause lies in the insufficient sanitization and validation of user-supplied input before it is rendered back to the client side. SureCart versions ranging from n/a through 4.9.5 fail to properly encode or escape special characters such as angle brackets, quotes, and ampersands within specific form fields or data entry points. This lack of output encoding allows raw JavaScript code to be embedded directly into HTML responses without triggering browser security filters designed to prevent script execution in non-script contexts. The vulnerability likely exists in areas where user-generated content is displayed back to the same site users, such as order notes, customer profiles, product descriptions, or checkout form submissions that are later viewed by store owners or support staff.
From an operational perspective, the impact of this stored XSS vulnerability extends far beyond simple script execution. An attacker who successfully exploits this flaw can hijack administrative sessions by stealing session cookies or authentication tokens transmitted via HTTP headers. This capability allows for complete compromise of the WordPress dashboard and the e-commerce platform managed by SureCart. Beyond account takeover, the malicious scripts can perform actions on behalf of authenticated users without their knowledge or consent. These actions may include modifying product prices, altering order statuses, redirecting customers to phishing sites during checkout processes, or defacing the public-facing storefront. The persistent nature of stored XSS means that every user viewing the affected page becomes a potential victim, creating a high-risk scenario for data theft and reputation damage.
This vulnerability aligns with CWE-79, which categorizes improper neutralization of input during web page generation as Cross-site Scripting. Furthermore, in terms of offensive security frameworks like MITRE ATT&CK, this flaw facilitates techniques associated with Collection via Browser Redirect or Credential Access through Stealing Web Session Cookies. The attack vector typically involves the Injection phase, where malicious payloads are introduced into the application's data stores, followed by Execution when those payloads are rendered and run in a victim's browser.
Mitigation strategies must address both immediate remediation and long-term defensive posture. For organizations currently running affected versions of SureCart, upgrading to version 4.9.6 or later is the primary recommended action, as this release includes patches for input validation and output encoding issues. Until an upgrade can be performed, administrators should implement strict Content Security Policy headers that restrict script execution sources, although this may interfere with legitimate plugin functionality if not configured carefully. Additionally, deploying a Web Application Firewall capable of detecting and blocking XSS payloads in HTTP requests provides an additional layer of defense by intercepting malicious inputs before they reach the application logic. Regular security audits focusing on input sanitization practices across all custom code and third-party integrations are essential to prevent similar vulnerabilities from being introduced or overlooked in future updates.