CVE-2026-19914
Received Received - Intake

Stored XSS in Welcart e-Commerce WordPress Plugin

Publication date: 2026-09-01

Last updated on: 2026-09-01

Assigner: Wordfence

Description
The Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_order' parameter in all versions up to, and including, 2.12.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is delivered via the guest checkout form, requiring no authentication, and executes when an administrator views the affected order in the WordPress admin panel.

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Meta Information

Published
2026-09-01
Last Modified
2026-09-01
Generated
2026-09-01
AI Q&A
2026-09-01
EPSS Evaluated
N/A
NVD
CVE-2026-19914
EUVD
EUVD-2026-68997

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
welcart welcart_e-commerce to 2.12.1 (inc)

Helpful Resources

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

This is a Stored Cross-Site Scripting (XSS) vulnerability in the Welcart e-Commerce WordPress plugin up to version 2.12.1. It allows unauthenticated attackers to inject malicious scripts via the 'custom_order' parameter due to insufficient input sanitization. The payload executes when an administrator views the affected order in the WordPress admin panel.

Detection Guidance

Check for the presence of the Welcart e-Commerce plugin versions up to 2.12.1. Inspect WordPress admin panel order pages for unusual scripts in the 'custom_order' parameter. Review guest checkout forms for unexpected input fields or payloads.

Impact Analysis

Attackers can steal sensitive admin session cookies, perform actions on behalf of the admin, or deface the website. Since the payload executes in the admin panel, it could lead to full site compromise, data theft, or unauthorized changes without requiring authentication.

Compliance Impact

This vulnerability could violate GDPR by exposing user data through script injection or HIPAA by compromising protected health information if stored in orders. It undermines data integrity and confidentiality requirements under these regulations.

Mitigation Strategies

Update the Welcart e-Commerce plugin to version 2.12.2 or later immediately. Disable guest checkout forms if not required. Monitor admin panel pages for unauthorized script injections.

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