CVE-2026-3239: Strong Testimonials <= 3.2.21 - Authenticated (Contributor+) Stored Cross-Site Scripting via testimonial_view Shortcode
The Strong Testimonials plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's testimonialview shortcode in all versions up to, and including, 3.2.21 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3239?
CVE-2026-3239 is considered a critical severity vulnerability due to its potential for exploitation in stored cross-site scripting.
How do I fix CVE-2026-3239?
To fix CVE-2026-3239, update the Strong Testimonials plugin to version 3.2.22 or later.
What type of vulnerability is CVE-2026-3239?
CVE-2026-3239 is categorized as an Authenticated Stored Cross-Site Scripting (XSS) vulnerability.
Who is affected by CVE-2026-3239?
Any WordPress site using the Strong Testimonials plugin version 3.2.21 or earlier is affected by CVE-2026-3239.
What are the potential impacts of CVE-2026-3239?
The potential impacts of CVE-2026-3239 include unauthorized access to sensitive data, site defacement, and user session hijacking.