What’s Vulnerable › Vulnerabilities

CVE-2024-8432: Appointment & Event Booking Calendar Plugin – Webba Booking <= 5.0.48 - Missing Authorization to Authenticated (Subscriber+) CSS Settings Update

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-24 · updated 2026-06-17
• Weakness: CWE-862

Description

The Appointment & Event Booking Calendar Plugin – Webba Booking plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_appearance() function in all versions up to, and including, 5.0.48. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the booking form's CSS.

Affected products

• webba-agency Easy Appointment Booking & Scheduling System – Webba Booking Calendar: before 5.0.50 — fixed in 5.0.50

How to fix

Upgrade to a fixed version: webba-agency Easy Appointment Booking & Scheduling System – Webba Booking Calendar 5.0.50. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/webba-booking-lite/tags/5.0.48/includes/class-wbk-request-manager.php#L1986
• https://plugins.trac.wordpress.org/changeset/3152926/webba-booking-lite/trunk/includes/class-wbk-request-manager.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/23b33b77-2e72-4959-bdce-646e968f2a73?source=cve

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