Hydra Booking <= 1.2.2 - Authenticated (Host+) Stored Cross-Site Scripting via 'first_name' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15948
- 2026-10-03 Alias added: GHSA-423j-8hf8-fp25
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8331fe3f-e943-4f4c-887f-761f3e18eb79?source=cve
- https://plugins.trac.wordpress.org/browser/hydra-booking/trunk/app/Content/Archive/archive-page-tfhb-host.php#L30
- https://plugins.trac.wordpress.org/browser/hydra-booking/trunk/admin/Controller/HostsController.php#L495
- https://plugins.trac.wordpress.org/browser/hydra-booking/trunk/admin/Controller/HostsController.php#L77
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3632543%40hydra-booking&new=3632543%40hydra-booking
More Themefic vulnerabilities
- TI-2023-02626 Ultimate Addons for Contact Form 7 < 3.1.29 - Reflected XSS CVSS 3.1MEDIUM 6.1
- TI-2026-57195 Ultra Addons for Contact Form 7 <= 3.5.50 - Unauthenticated Arbitrary File Upload via Signature Form Field CVSS 3.1CRITICAL 9.8
- TI-2023-02625 Ultimate Addons for Contact Form 7 < 3.1.29 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2026-83954 Arbitrary file deletion in Ultra Addons for Contact Form 7 CVSS 3.1CRITICAL 9.8
- TI-2024-19308 WordPress Tourfic plugin <= 2.11.15 - Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 9.9
- TI-2022-23624 WordPress Ultimate Addons for Contact Form 7 Plugin <= 3.1.23 is vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-15948 · CVE Program
- CVE-2026-15948 · NVD
- FIRST EPSS
- GHSA-423j-8hf8-fp25 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences