CVE-2026-103346
Received Received - Intake

Cross-Site Scripting in Payflex Payment Gateway

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Patchstack

Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tomlister Payflex Payment Gateway payflex-payment-gateway allows Reflected XSS.This issue affects Payflex Payment Gateway: from n/a through 2.7.1.

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
CVE-2026-103346
EUVD
EUVD-2026-93223

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Tomlister Payflex Payment Gateway 0

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 reflected Cross-site Scripting (XSS) vulnerability in the Tomlister Payflex Payment Gateway plugin for WordPress. It allows attackers to inject malicious scripts into web pages viewed by users. The vulnerability exists in versions up to 2.7.1 and is triggered when users interact with crafted links or forms.

Detection Guidance

To detect this reflected XSS vulnerability, monitor web traffic for suspicious input parameters in Payflex Payment Gateway requests. Check for unusual script tags or payloads in URLs or form submissions. Use tools like Burp Suite or OWASP ZAP to intercept and analyze HTTP requests for untrusted input.

Impact Analysis

Attackers could steal visitor data, hijack user accounts, or perform actions on behalf of users. Exploitation requires user interaction like clicking a malicious link. The impact includes potential data breaches, unauthorized access, and compromised user sessions.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection. Organizations may face fines or penalties if exploited, as it compromises data confidentiality and integrity.

Mitigation Strategies

Immediately update the Payflex Payment Gateway plugin to version 2.8.0 or later. If updating is not possible, apply Patchstack's mitigation rule to block attacks until the update is applied. Ensure all user inputs are properly sanitized and validated.

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