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CVE-2024-8274: WP Booking Calendar <= 10.5 - Reflected Cross-Site Scripting

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-30 · updated 2026-06-17
• Weakness: CWE-79

Description

The WP Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via several parameters from 'timeline_obj' in all versions up to, and including, 10.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Affected products

• wpdevelop Booking Calendar: before 10.5.1 — fixed in 10.5.1

How to fix

Upgrade to a fixed version: wpdevelop Booking Calendar 10.5.1. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/booking/tags/10.4/core/timeline/v2/wpbc-class-timeline_v2.php#L520
• https://plugins.trac.wordpress.org/changeset/3143364/booking/trunk/core/timeline/v2/wpbc-class-timeline_v2.php?old=3139443&old_path=booking%2Ftrunk%2Fcore%2Ftimeline%2Fv2%2Fwpbc-class-timeline_v2.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/83804c2a-2c4a-4f69-b833-dcd53ddab94d?source=cve

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