The Free Booking Plugin for Hotels, Restaurants and Car Rentals – eaSYNC Booking plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.3.21 via the 'view_request_details' due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to view the details of any booking request. The vulnerability was partially patched in versions 1.3.18 and 1.3.21.
CVE ID: CVE-2025-4691
CVSS Base Severity: MEDIUM
CVSS Base Score: 5.3
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Vendor: syntactics
Product: Free Booking Plugin for Hotels, Restaurants and Car Rentals – eaSYNC Booking
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 4.62% (scored less or equal to compared to others)
EPSS Date: 2025-06-01 (when was this score calculated)