CVE-2025-7732 Overview
CVE-2025-7732 is a Stored Cross-Site Scripting (XSS) vulnerability [CWE-79] in the Lazy Load for Videos plugin for WordPress. The flaw affects all versions up to and including 2.18.7. The plugin's lazy-loading handlers read client-supplied data-video-title and href attributes, decode HTML entities by default, and pass them directly into DOM sinks without escaping or validation. Authenticated attackers with Contributor-level access or higher can inject arbitrary JavaScript that executes when any user views the affected page.
Critical Impact
Authenticated Contributors can inject persistent JavaScript that executes in the browsers of site visitors and administrators, enabling session theft, administrative action abuse, and content tampering.
Affected Products
- Lazy Load for Videos WordPress plugin, versions ≤ 2.18.7
- Sites using the plugin's lazyload-youtube.js handler
- Sites using the plugin's lazyload-vimeo.js handler
Discovery Timeline
- 2025-08-27 - CVE CVE-2025-7732 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-7732
Vulnerability Analysis
The vulnerability resides in the JavaScript handlers that initialize lazy-loaded video embeds for YouTube and Vimeo. These handlers read attributes from DOM elements rendered from post content, including data-video-title and href. The handlers decode HTML entities by default and then write the resulting values into DOM sinks responsible for building the video player markup.
Because the plugin performs no additional sanitization or output escaping after decoding, any markup embedded in the attribute payload is reintroduced as live HTML. A Contributor who authors a post can place crafted attribute values into shortcodes or markup rendered by the plugin. When any visitor loads the resulting page, the injected script executes in that visitor's browser context, including administrators who review draft content.
Root Cause
The root cause is insufficient input sanitization and missing output escaping on client-controlled attribute values. The plugin trusts attribute content, applies HTML entity decoding, and then uses unsafe DOM insertion patterns rather than text-only assignment. This pattern turns stored user content into executable script at render time.
Attack Vector
Exploitation requires an authenticated account at Contributor level or above. The attacker publishes or submits content containing a shortcode or markup that produces a lazy-load element carrying a malicious data-video-title or href value. The payload persists in the WordPress database. When a visitor or reviewer loads the page, the plugin's lazy-loading script decodes the attribute and injects the payload into the DOM, triggering script execution. The scope is Changed because the script runs in the browser of other users, including higher-privileged accounts.
Technical details of the vulnerable handlers are available in the WordPress Lazy Load YouTube Script and WordPress Lazy Load Vimeo Script sources.
Detection Methods for CVE-2025-7732
Indicators of Compromise
- Post or page content containing lazy-load video shortcodes with suspicious data-video-title values that include HTML tags, event handlers, or encoded script fragments.
- Unexpected <script> elements or inline event handlers appearing in rendered video embed markup.
- New or modified posts authored by Contributor-level accounts that embed video shortcodes referencing unusual URLs in the href attribute.
Detection Strategies
- Query the wp_posts table for stored shortcodes or markup containing attribute values with <, >, onerror, onload, or javascript: substrings.
- Review web server access logs for outbound requests from visitor browsers to unknown domains originating on pages that render the plugin's video embeds.
- Enable WordPress audit logging to track Contributor-level post submissions and revisions that include video shortcodes.
Monitoring Recommendations
- Monitor Content Security Policy (CSP) violation reports for inline script execution on pages that embed videos.
- Track browser-side error telemetry for unexpected script loads tied to video embed containers.
- Alert on administrator session activity that correlates with page views of Contributor-submitted draft content.
How to Mitigate CVE-2025-7732
Immediate Actions Required
- Update the Lazy Load for Videos plugin to a version newer than 2.18.7 once a patched release is available on the WordPress plugin repository.
- Audit all Contributor and Author accounts, remove inactive users, and enforce strong authentication for content submitters.
- Review existing posts and drafts for malicious shortcodes or markup containing script payloads in video attribute fields.
Patch Information
The fix is tracked in WordPress Changeset #3348894. Administrators should install the latest release from the WordPress Plugin Developer Info page. Full technical context is available in the Wordfence Vulnerability Report.
Workarounds
- Deactivate the Lazy Load for Videos plugin until the patched release is deployed.
- Restrict the ability to publish or submit content containing video shortcodes to trusted Editor or Administrator roles.
- Deploy a Content Security Policy that blocks inline scripts and restricts script sources to a strict allowlist.
- Use a Web Application Firewall rule to strip HTML tags and event handler attributes from video shortcode parameters at the edge.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
