CVE-2026-92622: Wpchill Strong Testimonials

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Strong Testimonials plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'lightbox_class' Shortcode Attribute in all versions up to, and including, 3.3.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that the targeted testimonial view has at least one published testimonial with a featured image and the lightbox wrapper enabled, as the vulnerable code path is only reached when a thumbnail is rendered.

Affected products

• Wpchill Strong Testimonials: up to and including 3.3.8

Published 2026-09-18. Last modified 2026-09-18.