CVE-2026-57417 Overview
CVE-2026-57417 is a stored cross-site scripting (XSS) vulnerability in the RexTheme Cart Lift plugin for WordPress. The flaw affects all versions from initial release through 3.1.57 and is classified under [CWE-79]: Improper Neutralization of Input During Web Page Generation. Attackers can inject persistent JavaScript payloads that execute in the browser of any user viewing the affected page.
Critical Impact
Unauthenticated attackers can store malicious scripts that execute in administrator and visitor browsers, enabling session theft, credential harvesting, and unauthorized actions across the WordPress site.
Affected Products
- RexTheme Cart Lift plugin for WordPress
- All versions up to and including 3.1.57
- WordPress sites using Cart Lift for cart abandonment recovery
Discovery Timeline
- 2026-07-13 - CVE-2026-57417 published to the National Vulnerability Database
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-57417
Vulnerability Analysis
CVE-2026-57417 is a stored XSS flaw in the Cart Lift plugin, a cart abandonment recovery tool for WooCommerce-based WordPress sites. The plugin fails to properly neutralize user-controlled input before rendering it within web page output. As a result, attacker-supplied HTML and JavaScript persists in the plugin's data store and executes when the affected page is rendered in a victim's browser.
The network-accessible attack surface, combined with a scope change to the browser context, allows the injected script to run under the origin of the WordPress site. This exposes session cookies, authentication state, and any DOM-accessible data belonging to the victim. User interaction is required, which typically means an administrator or customer navigating to the injected page.
Root Cause
The vulnerability stems from missing or insufficient output encoding within the Cart Lift plugin's request handling and rendering paths. Input accepted by the plugin, likely through cart, campaign, or configuration fields, is stored and later reflected into HTML without contextual escaping. The Patchstack advisory confirms the issue affects the plugin through version 3.1.57.
Attack Vector
An attacker submits crafted input containing HTML or JavaScript payloads to a Cart Lift-controlled field. The payload is persisted server-side and executes each time an authenticated user or site visitor loads the resulting page. Because the vulnerability requires no authentication and only limited user interaction, attackers can weaponize it for administrator account takeover, redirection to malicious sites, or delivery of secondary payloads. See the Patchstack XSS Vulnerability Report for advisory details.
Detection Methods for CVE-2026-57417
Indicators of Compromise
- Unexpected <script>, <img onerror=>, or <svg> tags stored in Cart Lift plugin database tables or wp_options entries
- Outbound requests from administrator browsers to unfamiliar domains shortly after visiting WordPress admin pages
- New or modified WordPress administrator accounts created without a corresponding legitimate login event
- Anomalous session cookie exfiltration patterns in web proxy or WAF logs
Detection Strategies
- Query WordPress database tables associated with Cart Lift for stored values containing script tags, event handlers, or javascript: URIs
- Deploy web application firewall rules that flag XSS payload patterns targeting Cart Lift endpoints
- Review WordPress activity logs for anonymous submissions to Cart Lift forms followed by administrator page views
Monitoring Recommendations
- Enable Content Security Policy (CSP) reporting to capture unexpected inline script execution
- Monitor plugin version inventory and alert when any Cart Lift instance reports a version at or below 3.1.57
- Correlate WordPress admin session activity with outbound network traffic to identify possible cookie exfiltration
How to Mitigate CVE-2026-57417
Immediate Actions Required
- Identify all WordPress sites running the RexTheme Cart Lift plugin and inventory installed versions
- Update Cart Lift to a fixed release once RexTheme publishes a patched version above 3.1.57
- Audit stored plugin data for injected scripts and remove malicious entries before restoring service
- Rotate WordPress administrator credentials and invalidate active sessions if compromise is suspected
Patch Information
Cart Lift versions through 3.1.57 are affected. Administrators should monitor the Patchstack XSS Vulnerability Report and the RexTheme plugin changelog for a fixed release, then apply it across all sites.
Workarounds
- Temporarily deactivate the Cart Lift plugin until a patched version is available
- Restrict access to Cart Lift administrative endpoints via IP allowlisting at the web server or WAF layer
- Enforce a strict Content Security Policy that disallows inline scripts to reduce exploit impact
- Require administrators to use dedicated browser profiles when managing WordPress sites running the affected plugin
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
