Client Testimonial Slider <= 2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Testimonial Heading' Setting

2026-02-18 20:59

Muhammad Nur Ibnu Hubab

Strategic Overview

Status

Unpatched

Affected PluginClient Testimonial Slider

Affected Version<= 2.0

CVSS4.4Medium

CVECVE-2026-2716

View all Client Testimonial Slider vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) 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.

External References

https://www.cve.org/CVERecord?id=CVE-2026-2716 https://www.wordfence.com/threat-intel/vulnerabilities/id/583b5cd7-a33e-41d0-a389-ac36679d5f22

CVSS Vector

4.4

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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