CVE-2025-4691: easync — Fix

Description

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
syntacticsinc	easync	< 1.3.22

References

Advisories & Patches

https://plugins.trac.wordpress.org/changeset/3243634/ https://plugins.trac.wordpress.org/changeset/3293607/ https://plugins.trac.wordpress.org/changeset/3300408/

Other References

https://plugins.trac.wordpress.org/browser/easync-booking/tags/1.3.17/easync.php#L4859 https://www.wordfence.com/threat-intel/vulnerabilities/id/3c9953b3-dd09-4c80-be11-4daf3bbac720?source=cve

Frequently Asked Questions

What is CVE-2025-4691? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-4691? +

CVE-2025-4691 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-4691? +

CVE-2025-4691 affects products from syntacticsinc, specifically: easync. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-4691? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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