What the vulnerability does
01Description
The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'a' (above_fold_images) parameter in all versions up to, and including, 4.2.10 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.
Explanation of Vulnerability in Simple Terms
02Summary
Optimole versions up to 4.2.10 contain a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts affecting multiple users. The vulnerability requires no user interaction and can impact confidentiality and integrity across the site. Update to a version newer than 4.2.10 to resolve this issue.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in users' browsers and affect site content or steal data.
Potential impact on your site
04Site Impact
Visitors and admins may see injected content, have sessions compromised, or have data stolen without warning.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
August 28, 2026
CVE published
