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Vulnerability · Published Aug 15, 2026 · Assigned by Wordfence

CVE-2026-15948Hydra Booking <= 1.2.2 - Authenticated (Host+) Stored Cross-Site Scripting via 'first_name' Parameter

Medium 6.4

In plain English

A medium-severity cross-site scripting in Hydra Booking — Appointment Scheduling & Booking Calendar from themefic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium
Exploit odds (30 days)0.4%top 70.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

The Hydra Booking — Appointment Scheduling & Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'first_name' 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 tfhb_host 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 products (as reported)

VendorProductVersions
themefic Hydra Booking — Appointment Scheduling & Booking Calendar 0 – through 1.2.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References