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Vulnerability record · CVE-2026-16143 · published 5 August 2026

CVE-2026-16143: Cross-site scripting vulnerability

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.

7.2 CVSS 3.1 High EPSS 0.40% · top 67.8% CWE-79 · Cross-site scripting Deferred
7.2CVSS 3.1 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
12 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

LinkTags
https://plugins.trac.wordpress.org/browser/vikrentitems/tags/1.2.1/admin/views/editorder/tmpl/default.php#L499
https://plugins.trac.wordpress.org/browser/vikrentitems/tags/1.2.1/site/controller.php#L389
https://plugins.trac.wordpress.org/changeset/3617300/vikrentitems/trunk/admin/views/editorder/tmpl/default.php
https://www.wordfence.com/threat-intel/vulnerabilities/id/197760d1-395d-4dfb-aaa7-5fc5fc0a1ecb?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-16143), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.