PHP Object Injection Vulnerability in GS Testimonial Slider by WordPress
CVE-2026-78527

8.8HIGH

Key Information:

Vendor

WordPress
Status
Gs Testimonial Slider
Vendor
CVE Published:
30 October 2026

What is CVE-2026-78527?

A PHP Object Injection vulnerability exists in the GS Testimonial Slider plugin for WordPress, affecting versions up to 3.3.10. This flaw can be exploited by attackers to create malicious objects, potentially leading to unauthorized actions within the application. Proper validation and sanitization of user inputs are critical to mitigate the risks associated with this vulnerability. To ensure your website's security, it is highly recommended to update the plugin to the latest version.

Affected Version(s)

GS Testimonial Slider <= 3.3.10

References

https://patchstack.com/database/wordpress/plugin/gs-testi...
vdb-entry

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program
.