# VikBooking Hotel Booking Engine & PMS <= 1.8.16 - Cross-Site Request Forgery to Booking Modification, Deletion and Data Export

- **ID:** WPSEC-2026-1408
- **Plugin:** VikBooking Hotel Booking Engine & PMS (`vikbooking`), https://wordpress.org/plugins/vikbooking/
- **Affected versions:** all versions before 1.8.17
- **Fixed in:** 1.8.17 (Update to 1.8.17 or later.)
- **Severity:** Medium 5.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L)
- **Weakness:** CWE-352
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-21)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/vikbooking
- **Fix released:** 2026-10-20
- **Published:** 2026-10-21
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1408/

## Description

The VikBooking Hotel Booking Engine & PMS plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.8.16 due to missing or incorrect nonce validation on several administrative tasks, including updatebusy, updatebusydoinv, removebusy, removeorders, icsexportlaunch, csvexportlaunch, exportcustomerslaunch and condtext_update_tmpl. This makes it possible for unauthenticated attackers to edit or delete bookings, trigger data exports, or rewrite conditional text template files via a forged request, provided they can trick a site administrator into performing an action such as clicking on a link.

## References

- https://wpsec.com/vuln/WPSEC-2026-1408/
- https://plugins.svn.wordpress.org/vikbooking/tags/1.8.17/
- https://wordpress.org/plugins/vikbooking/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1408/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.