CVE-2024-54341: LabelGrid Tools Reflected XSS Vulnerability

CVE-2024-54341 Overview

CVE-2024-54341 is a reflected Cross-Site Scripting (XSS) vulnerability in the LabelGrid Tools WordPress plugin (label-grid-tools). The flaw affects all versions up to and including 1.3.58. It stems from improper neutralization of user-supplied input during web page generation, classified as [CWE-79]. An unauthenticated attacker can craft a malicious URL that, when visited by a target user, executes arbitrary JavaScript in the victim's browser session. The issue was published to the National Vulnerability Database (NVD) on December 13, 2024.

Critical Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in a victim's browser, enabling session theft, credential harvesting, and unauthorized actions performed in the victim's context on the WordPress site.

Affected Products

LabelGrid Tools WordPress plugin (label-grid-tools) versions through 1.3.58
WordPress sites with the vulnerable plugin installed and active
Administrators and visitors interacting with crafted URLs targeting the plugin

Discovery Timeline

2024-12-13 - CVE-2024-54341 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-54341

Vulnerability Analysis

The vulnerability is a reflected XSS issue in the LabelGrid Tools WordPress plugin. The plugin echoes user-controlled input back into HTTP responses without applying proper output encoding or input sanitization. When a victim clicks a crafted link containing malicious script content, the payload is reflected into the rendered page and executed by the browser.

Reflected XSS requires user interaction, which is reflected in the attack profile. However, no authentication is required to deliver the payload. The scope change in the impact profile indicates that successful exploitation can affect resources beyond the vulnerable component, such as session cookies or other site contexts.

The EPSS (Exploit Prediction Scoring System) probability is 0.333%, indicating limited current exploitation activity. No public proof-of-concept code or active exploitation has been reported in CISA's Known Exploited Vulnerabilities catalog.

Root Cause

The plugin fails to neutralize special characters in input received via HTTP request parameters before including that input in the generated web page response. WordPress provides escaping functions such as esc_html(), esc_attr(), and esc_url() for safely emitting user data into HTML contexts. The vulnerable code paths in label-grid-tools omit these escaping calls, allowing raw HTML and JavaScript to be rendered.

Attack Vector

An attacker constructs a URL containing a malicious JavaScript payload as a request parameter handled by the vulnerable plugin endpoint. The attacker delivers the URL via phishing email, malicious link, or compromised third-party site. When an authenticated WordPress user, including administrators, clicks the link, the browser renders the reflected payload and executes the script in the context of the WordPress origin.

Typical payload outcomes include theft of authentication cookies, forced administrative actions via the WordPress REST API, injection of persistent backdoors through subsequent privileged requests, and redirection of victims to attacker-controlled phishing pages. See the Patchstack Vulnerability Report for additional technical context.

Detection Methods for CVE-2024-54341

Indicators of Compromise

Inbound HTTP GET or POST requests to LabelGrid Tools plugin endpoints containing encoded <script>, javascript:, onerror=, or onload= substrings
Web server access logs showing query parameters with HTML entities such as %3Cscript%3E or %22%3E%3C targeting plugin URLs
Unexpected outbound requests from administrator browsers to external domains shortly after visiting WordPress admin pages
WordPress audit log entries showing privileged actions originating from unusual referrers or IP addresses

Detection Strategies

Inspect web server and WAF logs for query strings containing common XSS payload signatures directed at label-grid-tools URLs
Deploy a Web Application Firewall (WAF) rule set that flags reflected XSS patterns in WordPress plugin parameters
Correlate browser execution telemetry with WordPress session activity to identify script execution following inbound link clicks
Monitor for new or modified WordPress user accounts with elevated privileges created shortly after suspicious requests

Monitoring Recommendations

Enable verbose access logging on the WordPress front-end and admin interfaces to capture full request URIs and referrers
Forward WordPress and reverse-proxy logs to a centralized analytics platform for query-string analysis
Alert on HTTP responses where input parameters are reflected verbatim into HTML response bodies for plugin endpoints
Track outbound network connections from endpoints used by WordPress administrators for anomalous destinations

How to Mitigate CVE-2024-54341

Immediate Actions Required

Identify all WordPress installations running the LabelGrid Tools plugin and verify the installed version against 1.3.58
Deactivate the label-grid-tools plugin on any affected site until a patched release is confirmed and applied
Force password rotation and session invalidation for WordPress administrator accounts on affected sites
Review WordPress audit logs for unauthorized administrative actions, new users, or modified plugin and theme files

Patch Information

At the time of this writing, the vulnerability is reported as affecting LabelGrid Tools versions up to and including 1.3.58. Administrators should consult the Patchstack Vulnerability Report and the official WordPress plugin repository for the latest patched version. Apply updates through the WordPress admin dashboard or via wp-cli once a fixed release is available.

Workarounds

Disable the LabelGrid Tools plugin until a patched version is released and validated in a test environment
Deploy a WAF rule blocking requests containing XSS payload signatures targeting label-grid-tools URL paths
Set a strict Content-Security-Policy header restricting inline script execution and external script sources on the WordPress site
Enforce the HttpOnly and Secure flags on WordPress authentication cookies to limit cookie theft via script execution

bash

# Configuration example
# Disable the vulnerable plugin via wp-cli
wp plugin deactivate label-grid-tools

# Update the plugin once a patched version is released
wp plugin update label-grid-tools

# Example Nginx Content-Security-Policy header
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'" always;