WordPress Plugin Vulnerabilities

Booking calendar, Appointment Booking System <= 3.2.36 - Unauthenticated Stored XSS via SVG File Upload

Description

The plugin does not properly sanitize uploaded SVG files, allowing unauthenticated attackers to upload a file that bypasses the plugin's script-stripping and executes arbitrary JavaScript when the SVG is opened, including in the session of an administrator who reviews the submitted booking.

Proof of Concept

Affects Plugins

No known fix

References

Classification

Type
XSS
CWE
CVSS

Miscellaneous

Original Researcher
Samdup Choephel
Submitter
Samdup Choephel
Submitter website
Submitter twitter
Verified
Yes

Timeline

Publicly Published
2026-08-17 (about 3 days ago)
Added
2026-08-17 (about 2 days ago)
Last Updated
2026-08-19 (about 9 hours ago)

Other