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Fencer Vulns
medium 5.3

CVE-2025-4691 json

Free Booking Plugin for Hotels, Restaurants and Car Rentals – eaSYNC Booking <= 1.3.21 - Insecure Direct Object Reference to Sensitive Information Exposure

published 2025-05-31 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-16555

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

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.

Patch / fix

  • syntactics free_booking_plugin_for_hotels,_restaurant_and_car_rental 1.3.22
  • syntacticsinc easync 1.3.22

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • syntactics eaSYNC Booking – Hotels, Restaurants & Car Rentals

Classification

Weakness
  • CWE-639 Authorization Bypass Through User-Controlled Key
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.