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Vulnerabilities

Vulnerability · 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 i

Published May 31, 2025 · catalog updated Apr 8, 2026 · eaSYNC Booking – Hotels, Restaurants & Car Rentals

Check if you run it

No confirmed exploitation is on record for CVE-2025-4691. EPSS is 0.33%. Act only if a listed version of eaSYNC Booking – Hotels, Restaurants & Car Rentals is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.33%
Remediation
Vendor / distro source
Affected products
vendor syntactics eaSYNC Booking – Hotels, Restaurants & Car Rentals 0 ≤1.3.21

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor syntactics eaSYNC Booking – Hotels, Restaurants & Car Rentals 0 ≤1.3.210 ≤1.3.21

How to fix CVE-2025-4691

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-4691. EPSS is 0.33%. Act only if a listed version of eaSYNC Booking – Hotels, Restaurants & Car Rentals is installed.

Which versions are affected?

Compare what you have installed with syntactics eaSYNC Booking – Hotels, Restaurants & Car Rentals 0 ≤1.3.21 0 ≤1.3.21. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.33%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 31, 2025 · EUVD

    Detected

    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 p

  2. Apr 8, 2026 · EUVD

    Updated

    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 p

Sources

  • CVE.orgVulnerability recordCVE-2025-4691

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4691

    30-day exploitation probability 0.3%

    first.org
  • EUVDVulnerability recordEUVD-2025-16555

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.