---
id: CVE-2026-92622
title: >-
  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
summary: >-
  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. Th…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: wpchill
product: Strong Testimonials
affected:
  - strong_testimonials <= 3.3.8
published: '2026-09-18'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:17:29.927'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92622'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/strong-testimonials/tags/3.3.8/includes/class-strong-testimonials-render.php#L723
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/strong-testimonials/tags/3.3.8/includes/class-strong-testimonials-view-shortcode.php#L60
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/strong-testimonials/tags/3.3.8/includes/functions-image.php#L70
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3699887%40strong-testimonials&new=3699887%40strong-testimonials
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/52a92e3c-cb64-4fc5-9248-6f4fc2a6a3cc?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T19:35:47.297226Z'
epss: 0.00331
epssPercentile: 0.23663
ingestedAt: '2026-09-18T08:38:04.107Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.