# CVE-2026-6818: VikBooking Hotel Booking Engine & PMS Stored XSS in special_requests

Source: https://junglewise.ai/threats/cve-2026-6818-vikbooking-hotel-booking-engine-pms-stored-xss-in-special-requests  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-08. Updated: 2026-07-08  
License: CC BY 4.0 with a link back

CVE-2026-6818 · Severity: high · CVSS 7.2 · Published 2026-07-08

The VikBooking Hotel Booking Engine & PMS plugin for WordPress, which manages hotel reservations and property management tasks, contains a security flaw. An attacker can inject malicious scripts into the 'special requests' field during a booking, which then run in the browser of any staff member or administrator who views that booking. This could lead to unauthorized access to the website's management dashboard or the theft of sensitive administrative session data.

Technologies: [E4jvikwp VikBooking Hotel Booking Engine & PMS](https://junglewise.ai/threats/technologies/vikbooking-hotel-booking-engine-pms). Vendors: [E4jvikwp](https://junglewise.ai/threats/vendors/e4jvikwp).

## Quick answers

**Is CVE-2026-6818 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6818 being exploited in the wild.

**How severe is CVE-2026-6818?** High severity, with a CVSS score of 7.2, published 8 July 2026.

**Which products and versions are affected?** E4jvikwp VikBooking Hotel Booking Engine & PMS up to, and including, 1.8.8.

**Is there a fix for CVE-2026-6818?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-6818 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-6818?** Check whether you run E4jvikwp VikBooking Hotel Booking Engine & PMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The VikBooking Hotel Booking Engine & PMS plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'special_requests' parameter. An unauthenticated remote attacker can submit a booking request containing malicious JavaScript. When an administrative user views the booking details in the backend (e.g., via editorder or booking_details views), the script executes in their browser context. This can lead to session hijacking or unauthorized administrative actions. The issue is fixed in version 1.8.9.

## Affected products

- e4jvikwp VikBooking Hotel Booking Engine & PMS up to, and including, 1.8.8

## Timeline

- 2026-07-08: disclosed
- 2026-07-08: advisory

## References

- [https://plugins.trac.wordpress.org/browser/vikbooking/tags/1.8.9/admin/helpers/widgets/booking_details.php](https://plugins.trac.wordpress.org/browser/vikbooking/tags/1.8.9/admin/helpers/widgets/booking_details.php)
- [https://plugins.trac.wordpress.org/browser/vikbooking/tags/1.8.9/admin/views/editorder/tmpl/default.php](https://plugins.trac.wordpress.org/browser/vikbooking/tags/1.8.9/admin/views/editorder/tmpl/default.php)
- [https://plugins.trac.wordpress.org/browser/vikbooking/tags/1.8.9/admin/views/orders/tmpl/default.php](https://plugins.trac.wordpress.org/browser/vikbooking/tags/1.8.9/admin/views/orders/tmpl/default.php)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/13a96e78-c83c-4ff1-a751-3dbaeb683d9d?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/13a96e78-c83c-4ff1-a751-3dbaeb683d9d?source=cve)

## Related threats

- [VikBooking Hotel Booking Engine reflected XSS](https://junglewise.ai/threats/cve-2026-95591-improper-neutralization-of-input-during-web-page-generation-cross)
- [e4jvikwp VikBooking Hotel Booking Engine & PMS Reflected XSS](https://junglewise.ai/threats/cve-2026-15346-e4jvikwp-vikbooking-hotel-booking-engine-pms-reflected-xss)
- [VikBooking Hotel Booking Engine & PMS Stored XSS in email parameter](https://junglewise.ai/threats/cve-2026-6820-vikbooking-hotel-booking-engine-pms-stored-xss-in-email-parameter)
- [e4jvikwp VikBooking Hotel Booking Engine CSRF to file deletion](https://junglewise.ai/threats/cve-2026-57723-e4jvikwp-vikbooking-hotel-booking-engine-csrf-to-file-deletion)
- [e4jvikwp VikBooking Hotel Booking Engine DOM-based XSS](https://junglewise.ai/threats/cve-2026-42683-e4jvikwp-vikbooking-hotel-booking-engine-dom-based-xss)