CVE-2026-16143
Received Received - Intake

Stored XSS in VikRentItems WordPress Plugin

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Wordfence

Description
The VikRentItems – Flexible Rental Management System plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customer email field of the booking checkout form in versions up to, and including, 1.2.1. This is due to insufficient input sanitization and output escaping in the saveorder() function, which stores the raw email value via VikRequest::getString() (applying only sanitize_text_field(), which does not neutralize HTML attribute-breaking characters such as double quotes), and in the editorder template which echoes the stored custmail value into an HTML input element's value attribute without esc_attr(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-16143
EUVD
EUVD-2026-53036

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
vikrentitems vikrentitems to 1.2.1 (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 vulnerability is a Stored Cross-Site Scripting (XSS) flaw in the VikRentItems WordPress plugin. It allows unauthenticated attackers to inject malicious scripts via the customer email field in the booking checkout form. The issue occurs because the plugin does not properly sanitize or escape user input before storing it in the database or rendering it in HTML input fields.

Detection Guidance

Check WordPress sites using the VikRentItems plugin version 1.2.1 or lower. Inspect booking checkout forms for stored XSS via customer email fields. Look for scripts injected into pages that execute when accessed.

Impact Analysis

An attacker could exploit this to inject scripts that run in the browsers of users who view the affected pages. This could lead to theft of cookies, session tokens, or other sensitive data. It may also allow attackers to perform actions on behalf of users or deface websites.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations using this plugin may face compliance violations if user data is compromised due to the XSS flaw.

Mitigation Strategies

Update the VikRentItems plugin to the latest version. If no update is available, disable the plugin temporarily. Sanitize all user inputs and escape outputs in WordPress forms.

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