# CVE-2026-85127: VikBooking Hotel Booking Engine & PMS unauthenticated stored XSS via SVG chat attachment

Source: https://junglewise.ai/threats/cve-2026-85127-vikbooking-hotel-booking-engine-pms-unauthenticated-stored-xss  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-18. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-85127 · Severity: high · CVSS 8.8 · Published 2026-09-18

VikBooking is a WordPress plugin that provides hotel booking and property management functionality. The plugin fails to validate file types or sanitize content in its live chat attachment feature, allowing unauthenticated visitors to upload malicious SVG files containing active code. When administrators view these conversations, the malicious code executes in their browser, potentially compromising their accounts and administrative access.

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

## Quick answers

**Is CVE-2026-85127 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85127 being exploited in the wild.

**How severe is CVE-2026-85127?** High severity, with a CVSS score of 8.8, published 18 September 2026.

**Which products and versions are affected?** VikBooking Hotel Booking Engine & PMS 1.8.8 to 1.8.14.

**Is there a fix for CVE-2026-85127?** A patch was published on 2026-09-18: Version 1.8.15 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-85127 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-85127?** Check whether you run 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

This is a stored cross-site scripting (XSS) vulnerability in the live chat functionality of VikBooking, classified as CWE-79. The vulnerable component does not implement file type restrictions or content sanitization on chat attachments, allowing unauthenticated attackers to upload SVG files containing embedded JavaScript. The attack requires no authentication or user interaction beyond uploading the file; execution occurs automatically when an administrator views the affected conversation. An attacker can inject arbitrary JavaScript that executes with administrator privileges, enabling account takeover, malware injection, or other administrative abuse. The vulnerability affects versions 1.8.8 through 1.8.14 and is fixed in version 1.8.15.

## Affected products

- VikBooking Hotel Booking Engine & PMS 1.8.8 to 1.8.14

## Timeline

- 2026-09-16: disclosed
- 2026-09-18: advisory
- 2026-09-18: patched: Version 1.8.15 released

## References

- [https://wpscan.com/vulnerability/4bca17fb-e9b4-4dc7-994f-08ce4aafadc7/](https://wpscan.com/vulnerability/4bca17fb-e9b4-4dc7-994f-08ce4aafadc7/)

## Related threats

- [VikBooking Hotel Booking Engine stored XSS in attachment parameter](https://junglewise.ai/threats/cve-2026-95684-the-vikbooking-hotel-booking-engine-pms-plugin-for-wordpress-is)