# CVE-2026-42683: e4jvikwp VikBooking Hotel Booking Engine DOM-based XSS

Source: https://junglewise.ai/threats/cve-2026-42683-e4jvikwp-vikbooking-hotel-booking-engine-dom-based-xss  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-01. Updated: 2026-06-01  
License: CC BY 4.0 with a link back

CVE-2026-42683 · Severity: high · CVSS 7.1 · Published 2026-06-01

VikBooking is a WordPress plugin used by hotels to manage room bookings and property management systems. A security flaw allows attackers to inject malicious scripts into the website, which could lead to unauthorized actions being performed in a user's browser, such as stealing session information or redirecting guests to fraudulent sites. This typically occurs when a victim clicks a specially crafted link provided by the attacker.

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-2026-42683 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42683 being exploited in the wild.

**How severe is CVE-2026-42683?** High severity, with a CVSS score of 7.1, published 1 June 2026.

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

**Is there a fix for CVE-2026-42683?** A patch was published on 2026-05-20: Version 1.8.9 released to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-42683 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-42683?** 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

A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the VikBooking Hotel Booking Engine & PMS plugin due to improper neutralization of user-supplied input during web page generation. The flaw allows unauthenticated attackers to inject malicious scripts into the Document Object Model (DOM) environment. Exploitation requires a victim to interact with a malicious link or page (User Interaction required). Successful exploitation can lead to the execution of arbitrary JavaScript in the context of the victim's browser session, potentially allowing for session hijacking or unauthorized administrative actions if the victim is an authenticated user. The issue is resolved in version 1.8.9.

## Affected products

- e4jvikwp VikBooking Hotel Booking Engine & PMS up to 1.8.8

## Timeline

- 2026-04-20: other: Vulnerability reported by researcher
- 2026-05-20: advisory: Patchstack advisory published
- 2026-06-01: disclosed: CVE published to NVD dataset
- 2026-05-20: patched: Version 1.8.9 released to address the issue

## References

- [https://patchstack.com/database/wordpress/plugin/vikbooking/vulnerability/wordpress-vikbooking-hotel-booking-engine-pms-plugin-1-8-8-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/vikbooking/vulnerability/wordpress-vikbooking-hotel-booking-engine-pms-plugin-1-8-8-cross-site-scripting-xss-vulnerability?_s_id=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)
- [VikBooking Hotel Booking Engine & PMS Stored XSS in special_requests](https://junglewise.ai/threats/cve-2026-6818-vikbooking-hotel-booking-engine-pms-stored-xss-in-special-requests)
- [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)