Web Application Vulnerability in Welcart e-Commerce Plugin by WordPress
CVE-2026-16066

5.4MEDIUM

Key Information:

Vendor

WordPress
Status
Welcart E-commerce
Vendor
CVE Published:
12 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16066?

The Welcart e-Commerce plugin for WordPress prior to version 2.11.34 lacks proper sanitization and escaping of product fields. This oversight allows users with the Author role or higher to inject arbitrary web scripts. Such scripts can execute in the browser of any visitor accessing the product page, presenting a significant security risk. This vulnerability emphasizes the need for thorough input validation and escaping mechanisms in web applications.

Affected Version(s)

Welcart e-Commerce 0 < 2.11.34

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-16066 - Proof of Concept

References

https://wpscan.com/vulnerability/ed3b39a6-493c-490e-af41-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yaswanth Reddy Sunkara
WPScan
.