CVE-2026-116749: VikRentCar Car Rental Management System <= 1.4.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'className' Block Attribute
The VikRentCar Car Rental Management System plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'className' parameter in all versions up to, and including, 1.4.10 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. wpksespost() applied at save time does not neutralize the payload because the injection lands in an HTML-attribute context where only a raw double-quote is needed to break out, and block-comment JSON encoding of that quote is decoded back to a literal character by doblocks() at render time.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs an authenticated WordPress account with Contributor-level permissions or higher. They must be able to submit content containing the affected className block attribute.
When does the injected script execute?
The payload is stored in an injected page and executes when a user accesses that page. Exploitation does not require additional user interaction beyond visiting the affected page.
Which plugin versions are affected?
All VikRentCar Car Rental Management System versions through 1.4.10, including 1.4.10, are affected.