CVE-2025-49410 Overview
CVE-2025-49410 is a stored Cross-Site Scripting (XSS) vulnerability in the Imran Emu TC Testimonials plugin for WordPress. The flaw affects all versions of TC Testimonials up to and including 1.1.1. Attackers can inject malicious scripts that persist in the application and execute in the browsers of users who view affected pages. The issue is tracked under [CWE-79], Improper Neutralization of Input During Web Page Generation.
Critical Impact
Successful exploitation enables attackers to run arbitrary JavaScript in victim browsers, hijack authenticated sessions, escalate privileges within WordPress, and pivot to full site compromise.
Affected Products
- Imran Emu TC Testimonials WordPress plugin
- Versions from n/a through 1.1.1
- WordPress sites using the tc-testimonial plugin
Discovery Timeline
- 2025-08-20 - CVE-2025-49410 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-49410
Vulnerability Analysis
The TC Testimonials plugin fails to properly neutralize user-supplied input before rendering it as part of a web page. Attacker-controlled input reaches the HTML output context without sufficient escaping or sanitization. As a result, an attacker can store a JavaScript payload inside testimonial data that later executes when any visitor or administrator loads the affected page.
Stored XSS is more damaging than reflected variants because the payload persists in the WordPress database. Every subsequent request that renders the injected content triggers the payload without requiring further attacker interaction. When an administrator views the affected page, the payload runs with administrator context and can create new users, modify plugin settings, or install additional malicious code.
Root Cause
The root cause is missing or insufficient output encoding on testimonial fields handled by the plugin. Input flows from a form submission into a persistent store and back into rendered HTML without functions such as esc_html(), esc_attr(), or wp_kses() applied at the sink. This maps directly to [CWE-79].
Attack Vector
The vulnerability is exploitable over the network with no user interaction required to trigger stored payload execution once injected. An attacker submits crafted testimonial content containing HTML or JavaScript. When any user visits a page rendering that testimonial, the browser parses and executes the injected script under the site origin.
See the Patchstack advisory for TC Testimonials for additional technical detail. No verified proof-of-concept code has been published.
Detection Methods for CVE-2025-49410
Indicators of Compromise
- Testimonial entries containing <script>, onerror=, onload=, or javascript: fragments in the WordPress wp_posts or plugin-specific tables.
- Unexpected outbound HTTP requests from browsers loading pages that render TC Testimonials content.
- Newly created WordPress administrator accounts or unauthorized changes to user roles following testimonial submissions.
- Modified plugin or theme files with obfuscated JavaScript payloads.
Detection Strategies
- Query the WordPress database for stored testimonial fields containing HTML tags or event handler attributes.
- Inspect web server access logs for POST requests to testimonial submission endpoints followed by anomalous administrator activity.
- Deploy a Web Application Firewall (WAF) rule set that flags script tags and event handlers in form submissions targeting the plugin.
Monitoring Recommendations
- Enable WordPress audit logging to capture testimonial creation, edits, and user role changes.
- Monitor Content Security Policy (CSP) violation reports for script executions on pages that render testimonials.
- Alert on file integrity changes within wp-content/plugins/tc-testimonial/ and core WordPress directories.
How to Mitigate CVE-2025-49410
Immediate Actions Required
- Deactivate the TC Testimonials plugin on any WordPress site running version 1.1.1 or earlier until a patched release is confirmed.
- Audit existing testimonial records for injected HTML or JavaScript and purge malicious entries.
- Rotate credentials for WordPress administrator accounts and invalidate active sessions.
- Review recent user creations and role changes for signs of exploitation.
Patch Information
At the time of publication, the vendor has not confirmed a fixed version. Refer to the Patchstack advisory for updates on remediation status and replace the plugin if a fix is not released.
Workarounds
- Remove the plugin and use an actively maintained alternative for testimonial functionality.
- Restrict testimonial submission to authenticated, trusted users through access control rules.
- Enforce a strict Content Security Policy that blocks inline scripts and unknown script sources.
- Deploy virtual patching via a WAF to filter script and event handler payloads in requests to the plugin endpoints.
# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate tc-testimonial
wp plugin delete tc-testimonial
# Example ModSecurity rule to block script tags in testimonial submissions
SecRule REQUEST_URI "@contains /wp-admin/admin-ajax.php" \
"chain,deny,status:403,id:1004910,msg:'Block XSS attempt in TC Testimonials'"
SecRule ARGS "@rx (?i)(<script|onerror=|onload=|javascript:)" "t:none"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
