CVE-2025-22545: iframe to embed XSS Vulnerability

CVE-2025-22545 Overview

CVE-2025-22545 is a stored Cross-Site Scripting (XSS) vulnerability in the iframe-to-embed WordPress plugin developed by sw.galati. The flaw affects all versions up to and including 1.2. An authenticated attacker with low privileges can inject malicious JavaScript that persists in the database and executes in the browsers of users who view the affected pages. The vulnerability is tracked under CWE-79 for improper neutralization of input during web page generation.

Critical Impact
Attackers can persist arbitrary JavaScript in WordPress content, leading to session theft, administrative account takeover, and redirection of site visitors to attacker-controlled infrastructure.

Affected Products

WordPress plugin iframe-to-embed by sw.galati
All plugin versions from initial release through 1.2
WordPress sites running the vulnerable plugin with contributor-level or higher accounts

Discovery Timeline

2025-01-07 - CVE-2025-22545 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-22545

Vulnerability Analysis

The iframe-to-embed plugin fails to properly sanitize user-supplied input before rendering it within generated web pages. This allows an authenticated user to store JavaScript payloads that execute when other users, including administrators, view the affected content.

Stored XSS carries higher risk than reflected XSS because the payload persists server-side. Every visitor to the affected page triggers execution automatically, without requiring social engineering to click a crafted link. The scope change reflected in the CVSS vector indicates the injected script can affect resources beyond the vulnerable component itself, such as the WordPress admin interface.

Exploitation requires low privileges and user interaction, meaning an attacker needs an account on the target site and must wait for another user to load the injected content.

Root Cause

The root cause is missing or insufficient output encoding when the plugin renders attributes or content supplied through its iframe embedding functionality. Input passed into the plugin is written into the DOM without escaping HTML control characters such as <, >, ", and '. Because WordPress plugins often render shortcode attributes directly into page output, any unescaped user-controlled field becomes a viable XSS sink.

Attack Vector

Exploitation follows a standard stored XSS workflow. The attacker authenticates to WordPress with a low-privilege account permitted to use the plugin's shortcode or configuration UI. The attacker submits an iframe embedding request containing a JavaScript payload within an attribute, URL, or configuration field. The plugin stores the input and later renders it into a page without encoding, causing script execution in the victim's browser context.

Typical payloads leverage javascript: URIs, event handlers such as onerror and onload, or <script> tags depending on the exact sink. Because the scope changes to affect the broader WordPress application, an authenticated administrator viewing the page can have their session cookies stolen or account modified via authenticated AJAX calls to wp-admin.

No verified public exploit code is available. Refer to the Patchstack advisory for additional technical context.

Detection Methods for CVE-2025-22545

Indicators of Compromise

Presence of <script> tags, on* event handlers, or javascript: URIs inside wp_posts, wp_postmeta, or plugin-specific tables tied to iframe-to-embed
Unexpected outbound requests from administrator browsers to unknown domains after visiting content pages
New or modified WordPress administrator accounts created shortly after an admin viewed a page rendered by the plugin
Modified .php files under wp-content/ following suspicious admin sessions

Detection Strategies

Inventory WordPress installations and identify sites running iframe-to-embed version 1.2 or earlier
Query the WordPress database for iframe-related shortcodes containing script tags or JavaScript event handlers
Deploy Content Security Policy (CSP) reporting to surface inline script execution originating from post content
Review plugin-related audit logs for content submissions by contributor and author accounts

Monitoring Recommendations

Monitor authentication logs for administrator sessions immediately followed by privilege changes or plugin installations
Alert on POST requests to wp-admin/admin-ajax.php that originate from within page renders rather than legitimate admin workflows
Track file integrity for wp-config.php, theme files, and the mu-plugins directory

How to Mitigate CVE-2025-22545

Immediate Actions Required

Deactivate the iframe-to-embed plugin until a patched version is confirmed available from the vendor
Audit all existing pages and posts for previously stored iframe shortcodes containing suspicious payloads
Rotate credentials and session tokens for any administrator account that may have viewed compromised content
Restrict shortcode and unfiltered HTML capabilities to trusted roles only

Patch Information

The advisory indicates the vulnerability affects versions up to and including 1.2. At time of publication, no fixed version is identified in the NVD record. Consult the Patchstack advisory for the latest remediation status and to confirm whether an updated plugin release is available.

Workarounds

Remove the iframe-to-embed plugin and use an alternative embedding solution with active security maintenance
Enforce a strict Content Security Policy that disallows inline scripts and untrusted script sources
Limit user registration and require multi-factor authentication for any account with content publishing rights
Deploy a web application firewall rule set that blocks XSS payloads in POST parameters targeting WordPress admin endpoints

bash

# Example: locate and disable the vulnerable plugin via WP-CLI
wp plugin list --name=iframe-to-embed --fields=name,status,version
wp plugin deactivate iframe-to-embed
wp plugin delete iframe-to-embed

# Search post content for stored XSS indicators
wp db query "SELECT ID, post_title FROM wp_posts \
  WHERE post_content LIKE '%iframe-to-embed%' \
  AND (post_content LIKE '%<script%' \
       OR post_content LIKE '%javascript:%' \
       OR post_content REGEXP 'on[a-z]+=');"