CVE-2025-58825: Comment Form WP Stored XSS Vulnerability

CVE-2025-58825 Overview

CVE-2025-58825 is a stored cross-site scripting (XSS) vulnerability in the Comment Form WP – Customize Default Comment Form plugin for WordPress, developed by Habibur Rahman. The flaw affects all plugin versions up to and including 2.0.1. An authenticated attacker with high privileges can inject malicious script content that persists in the database and executes when other users view the affected pages. The vulnerability is categorized under [CWE-79] (Improper Neutralization of Input During Web Page Generation).

Critical Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in visitors' browsers, potentially leading to session hijacking, credential theft, or unauthorized administrative actions within the WordPress site context.

Affected Products

Comment Form WP – Customize Default Comment Form plugin (slug: comment-form-wp)
All versions from initial release through version 2.0.1
WordPress installations using the vulnerable plugin

Discovery Timeline

2025-09-05 - CVE-2025-58825 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-58825

Vulnerability Analysis

The vulnerability stems from improper neutralization of user-supplied input during web page generation. The Comment Form WP plugin fails to sanitize or encode input processed through its comment form customization features before rendering it in the browser.

Because the malicious payload is stored server-side, every subsequent request that renders the affected view triggers the injected script. The vulnerability requires an authenticated user with high privileges to inject the payload, and user interaction is needed to trigger the exploit. The scope-changed nature of the flaw means the injected script executes in a security context different from the vulnerable component itself.

Root Cause

The root cause is missing output encoding and input sanitization within the plugin's handling of comment form fields or configuration settings. WordPress provides escaping functions such as esc_html(), esc_attr(), and wp_kses() that must be applied to any data reflected into HTML output. The plugin failed to apply these safeguards consistently, permitting HTML and JavaScript payloads to be persisted and rendered as active markup.

Attack Vector

An authenticated attacker with elevated privileges submits crafted input containing JavaScript payloads through the plugin's customization interface. The malicious content is written to the WordPress database. When a visitor or administrator loads a page that displays the tainted content, the browser parses and executes the injected script within the site's origin. Common payload objectives include stealing authentication cookies, performing actions on behalf of the victim, or delivering additional client-side attacks.

Refer to the Patchstack XSS Vulnerability Report for additional technical context.

Detection Methods for CVE-2025-58825

Indicators of Compromise

Presence of <script> tags, javascript: URIs, or event handler attributes (onerror, onload) within stored plugin configuration or comment content in the WordPress database.
Unexpected outbound requests from user browsers to attacker-controlled domains after loading pages that render comment form content.
Administrator account activity or configuration changes that do not match legitimate operator actions.

Detection Strategies

Inspect the wp_options and wp_comments tables for HTML markup or encoded script payloads within fields associated with the comment-form-wp plugin.
Deploy a web application firewall rule set that flags stored XSS patterns in POST parameters targeting the plugin's administrative endpoints.
Review plugin version inventory across WordPress deployments and identify hosts running version 2.0.1 or earlier.

Monitoring Recommendations

Enable WordPress activity logging to capture changes to plugin settings and comment moderation actions.
Monitor browser Content Security Policy (CSP) violation reports for unexpected inline script executions on pages rendering comment forms.
Alert on authenticated administrative sessions that submit payloads containing HTML tags to plugin configuration endpoints.

How to Mitigate CVE-2025-58825

Immediate Actions Required

Identify all WordPress instances running the Comment Form WP plugin at version 2.0.1 or earlier.
Restrict administrative access to trusted operators and enforce multi-factor authentication on privileged WordPress accounts.
Audit existing plugin configuration and stored comments for injected script content and remove any suspicious entries.

Patch Information

At the time of publication, no fixed version is listed in the referenced advisory. Consult the Patchstack XSS Vulnerability Report and the plugin repository for updated release information. If no patched version is available, deactivate and remove the plugin until a fix is published.

Workarounds

Deactivate the Comment Form WP plugin until a vendor patch is released and verified.
Deploy a WordPress-aware web application firewall to filter XSS payloads targeting plugin endpoints.
Apply a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins.
Limit high-privilege WordPress accounts and review the roles that can access the plugin's customization interface.

bash

# Example: Disable the vulnerable plugin via WP-CLI
wp plugin deactivate comment-form-wp
wp plugin delete comment-form-wp

# Example CSP header to mitigate stored XSS execution
# Add to web server configuration
Content-Security-Policy: default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'