CVE-2025-54036

Webba Booking <= 5.1.20 - Cross-Site Request Forgery

2025-07-16 00:00
Nguyen Xuan Chien

Strategic Overview

Status
Patched in 5.1.21
Affected Plugin
Easy Appointment Booking & Scheduling System – Webba Booking Calendar
Affected Version
<= 5.1.20
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2025-54036
View all Easy Appointment Booking & Scheduling System – Webba Booking Calendar vulnerabilities

At a glance

CVE-2025-54036 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Easy Appointment Booking & Scheduling System WordPress plugin, affecting versions <= 5.1.20. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.1.21; sites on affected versions should update now. Disclosed July 2025, reported by Nguyen Xuan Chien.

Vulnerability Overview

The Appointment Booking & Scheduling Plugin — Webba Booking Calendar plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 5.1.20. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to perform an unauthorized action granted they can trick a site administrator into performing an action such as clicking on a link.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Easy Appointment Booking & Scheduling System <= 5.1.20 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Easy Appointment Booking & Scheduling System the fix is 5.1.21: builds <= 5.1.20 are affected, anything from 5.1.21 onward is not.

Remediation

Update to version 5.1.21, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Easy Appointment Booking & Scheduling System: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Easy Appointment Booking & Scheduling System 5.1.21 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-54036https://www.wordfence.com/threat-intel/vulnerabilities/id/ee44c189-c5ba-41f4-8457-1eb8cf7393fdhttps://nvd.nist.gov/vuln/detail/CVE-2025-54036

Related records

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