CVE-2024-49334: jLayer Parallax Slider XSS Vulnerability

CVE-2024-49334 Overview

CVE-2024-49334 is a reflected Cross-Site Scripting (XSS) vulnerability in the Unizoe Web Solutions jLayer Parallax Slider plugin for WordPress. The flaw stems from improper neutralization of user input during web page generation, classified under [CWE-79]. All plugin versions up to and including 1.0 are affected.

An attacker can craft a malicious URL containing JavaScript payloads that execute in a victim's browser when the link is clicked. Successful exploitation runs script code in the context of the WordPress site, enabling session theft, credential harvesting, or forced administrative actions.

Critical Impact

Attackers can execute arbitrary JavaScript in an authenticated user's browser session, potentially leading to WordPress account takeover when an administrator visits a crafted link.

Affected Products

• Unizoe Web Solutions jLayer Parallax Slider WordPress plugin (jlayer-parallax-slider-wp)
• All versions from initial release through 1.0
• WordPress installations with the vulnerable plugin activated

Discovery Timeline

• 2024-10-20 - CVE-2024-49334 published to the National Vulnerability Database
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-49334

Vulnerability Analysis

The jLayer Parallax Slider plugin fails to sanitize and encode user-supplied input before reflecting it back in server responses. When a victim requests a URL containing an attacker-controlled parameter, the plugin embeds that value directly into HTML output without contextual escaping.

The browser then parses the injected content as executable script. Because the attack vector requires user interaction, exploitation typically involves phishing links delivered via email, chat, or social media. Successful payloads run under the origin of the target WordPress site.

The scope-changed component of the impact rating reflects that injected script can affect resources beyond the vulnerable plugin, including the broader WordPress session context and administrative interfaces.

Root Cause

The underlying weakness is Improper Neutralization of Input During Web Page Generation [CWE-79]. The plugin does not apply WordPress sanitization functions such as esc_html(), esc_attr(), or wp_kses() to request parameters before rendering them into HTML responses. This omission allows raw HTML and JavaScript to be interpreted by the client browser.

Attack Vector

An attacker constructs a URL targeting the vulnerable plugin endpoint with a malicious payload in a query parameter. The attacker distributes the link to WordPress administrators or editors through social engineering. When the victim clicks the link while authenticated, the injected script executes with the victim's privileges. See the Patchstack Vulnerability Report for additional technical context.

// No verified proof-of-concept code is publicly available.
// Refer to the Patchstack advisory for technical details.

Detection Methods for CVE-2024-49334

Indicators of Compromise

• Web server access logs containing requests to jlayer-parallax-slider-wp endpoints with encoded <script>, javascript:, or onerror= payloads in query parameters
• Unexpected outbound HTTP requests from administrator browsers to attacker-controlled domains after clicking external links
• Creation of new WordPress administrator accounts or unauthorized plugin installations following a suspected phishing campaign

Detection Strategies

• Inspect HTTP request parameters for common XSS signatures such as <script, onerror=, onload=, and URL-encoded variants targeting the plugin
• Deploy a Web Application Firewall (WAF) rule set that flags reflected script content in query strings and referrer headers
• Correlate WordPress audit logs with authentication events to identify administrator sessions that performed anomalous actions shortly after browsing external links

Monitoring Recommendations

• Enable verbose logging on the WordPress site and forward logs to a centralized analytics platform for retention and query
• Monitor for the presence and version of jlayer-parallax-slider-wp across managed WordPress instances
• Alert on browser telemetry indicating script execution from unexpected origins within administrative sessions

How to Mitigate CVE-2024-49334

Immediate Actions Required

• Deactivate and remove the jLayer Parallax Slider plugin from all WordPress installations until a patched release is confirmed
• Rotate credentials and invalidate active sessions for WordPress administrators who may have interacted with untrusted links
• Deploy WAF rules that block reflected XSS payloads targeting plugin endpoints

Patch Information

As of the last NVD update on 2026-06-17, no vendor-supplied fixed version has been published for the jLayer Parallax Slider plugin. Administrators should treat all versions through 1.0 as vulnerable and monitor the Patchstack Vulnerability Report for future patch availability.

Workarounds

• Remove the plugin entirely and replace its functionality with a maintained alternative
• Enforce a strict Content Security Policy (CSP) that disallows inline scripts and restricts script sources to trusted origins
• Train administrators to avoid clicking untrusted links while authenticated to WordPress

# Example nginx header enforcing a restrictive Content Security Policy
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'none';" always;
add_header X-Content-Type-Options "nosniff" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;