Vulnerability · Published Sep 18, 2026 · Assigned by Wordfence
CVE-2026-92622Strong Testimonials <= 3.3.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'lightbox_class' Shortcode Attribute
Medium 6.4
In plain English
A medium-severity cross-site scripting in Strong Testimonials from wpchill. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| wpchill | Strong Testimonials | 0 – through 3.3.8 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/52a92e3c-cb64-4fc5-9248-6f4fc2a6a3cc?source=cve
- https://plugins.trac.wordpress.org/browser/strong-testimonials/tags/3.3.8/includes/functions-image.php#L70
- https://plugins.trac.wordpress.org/browser/strong-testimonials/tags/3.3.8/includes/class-strong-testimonials-view-shortcode.php#L60
- https://plugins.trac.wordpress.org/browser/strong-testimonials/tags/3.3.8/includes/class-strong-testimonials-render.php#L723
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3699887%40strong-testimonials&new=3699887%40strong-testimonials