Vulnerability in Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization — CVE-2026-120677

What to do now

Update Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization to 4.2.19 or later.

Affected versions

• Everything up to and including 4.2.18

The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.2.18 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the comment to be approved by an administrator and for the affected post to contain at least one iframe or video element (e.g., a core Video block), which is sufficient under default plugin settings where video lazy loading is enabled.

This description is reproduced verbatim from the public vulnerability record.

• https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/lazyload_replacer.php#L20
• https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/manager.php#L550
• https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/manager.php#L982
• https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.19
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e71028cd-18bc-4b16-a376-db34b7212206?source=cve

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.