CVE-2026-2716
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Stored XSS in Client Testimonial Slider Plugin for WordPress

Publication date: 2026-02-19

Last updated on: 2026-02-19

Assigner: Wordfence

Description
The Client Testimonial Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Testimonial Heading' setting in all versions up to, and including, 2.0. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
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Meta Information
Published
2026-02-19
Last Modified
2026-02-19
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-14
NVD
EUVD
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
wordfence wp-client-testimonial to 2.0 (inc)
wpbeaverbuilder client_testimonial_slider to 2.0 (inc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

The Client Testimonial Slider plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in the 'Testimonial Heading' setting in all versions up to and including 2.0.

This vulnerability exists because the plugin does not properly sanitize input or escape output, allowing authenticated users with Administrator-level access or higher to inject malicious web scripts.

These injected scripts execute whenever any user accesses the affected page.

The vulnerability only affects multi-site WordPress installations or installations where the unfiltered_html capability has been disabled.

Impact Analysis

This vulnerability can allow an attacker with Administrator-level access to inject malicious scripts into pages.

When other users visit these pages, the malicious scripts will execute in their browsers, potentially leading to theft of sensitive information, session hijacking, or other malicious actions.

Because the vulnerability requires high privileges and affects only certain WordPress configurations, the risk is somewhat limited but still significant in affected environments.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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