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 '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.

We have discovered 237 live websites that are affected by CVE-2026-15948.

Run a Free Instant Scan



Affected Software

Product  Hydra Booking
Category Wordpress Plugins
Vulnerable Domains237 live websites (100% of Hydra Booking install base)
Vulnerable Versions
  • from 0 through 1.2.2
Vulnerable Versions Count25 versions ( 96% of all versions)


Common Weakness Enumeration

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')



Details

  • Published - Aug 15, 2026
  • Updated - Aug 17, 2026

Credits

  • Wordfence PRISM (finder)

Website Distribution by Country

Number of websites using CVE-2026-15948
United States71 websites


Germany21 websites
India19 websites
GB16 websites
France11 websites
Cyprus9 websites
Australia7 websites
Spain6 websites
Netherlands6 websites
Canada5 websites

Website Distribution by TLD

Number of websites using CVE-2026-15948
.com110 websites
.org15 websites
.de9 websites
.co.uk6 websites
.com.au6 websites
.nl6 websites
.ca4 websites
.com.br4 websites
.it4 websites
.net3 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-15948

Top websites that are affected by CVE-2026-15948. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
**********.***.au Australia***,***
********.com United States*,***,***
**********.***.au Australia*,***,***
*******.*******.org Spain*,***,***
***********.nl Netherlands*,***,***
********.ca Canada*,***,***
**********.***.co United States*,***,***
*************.de Germany*,***,***
*****.org United States*,***,***
**********.com United States*,***,***
See full domain list

FAQ

CVE-2026-15948 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Hydra Booking
A total of 237 websites have been identified as vulnerable to CVE-2026-15948, based on global website indexing conducted by WebTechSurvey.
The Hydra Booking is affected by the CVE-2026-15948 vulnerability.
Hydra Booking versions up to and including 1.2.2 are vulnerable to CVE-2026-15948.