CVE-2022-1952: eaSYNC < 1.1.16 - Unauthenticated Arbitrary File Upload

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 24.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-07-11 · updated 2026-06-17
Weakness: CWE-434

Description

The Free Booking Plugin for Hotels, Restaurant and Car Rental WordPress plugin before 1.1.16 suffers from insufficient input validation which leads to arbitrary file upload and subsequently to remote code execution. An AJAX action accessible to unauthenticated users is affected by this issue. An allowlist of valid file extensions is defined but is not used during the validation steps.

Affected products

syntactics eaSYNC Booking – Hotels, Restaurants & Car Rentals: before 1.1.16 — fixed in 1.1.16

How to fix

Upgrade to a fixed version: syntactics eaSYNC Booking – Hotels, Restaurants & Car Rentals 1.1.16. Check the vendor advisory for mitigations.

References

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