CVE-2026-15948: Hydra Booking <= 1.2.2 - Authenticated (Host+) Stored Cross-Site Scripting via 'first_name' Parameter
The Hydra Booking — Appointment Scheduling & Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'firstname' parameter in all versions up to, and including, 1.2.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with host-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The tfhbhost role required to exploit this vulnerability can be self-assigned by any visitor via the plugin's public Signup shortcode, making this effectively exploitable by unauthenticated users who complete the registration flow.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-15948?
CVE-2026-15948 has a medium severity score of 6.4.
How do I fix CVE-2026-15948?
To fix CVE-2026-15948, update the Hydra Booking plugin to version 1.2.3 or later.
What type of vulnerability is CVE-2026-15948?
CVE-2026-15948 is a Stored Cross-Site Scripting (XSS) vulnerability.
What versions of Hydra Booking are affected by CVE-2026-15948?
CVE-2026-15948 affects all versions of the Hydra Booking plugin up to and including version 1.2.2.
How does CVE-2026-15948 impact users?
CVE-2026-15948 allows authenticated users to exploit the flaw and potentially execute malicious scripts through the 'first_name' parameter.