How severe is CVE-2025-12788?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Themefic Hydra Booking — Appointment Scheduling & Calendar

CVE-2025-12788

The Hydra Booking — Appointment Scheduling & Booking Calendar plugin for WordPress is vulnerable to missing payment verification to unauthenticated payment bypass in all versions up to, and including, 1.1.27. This is due to the plugin accepting client-controlled payment confirmation data in the tfhb_meeting_paypal_payment_confirmation_callback function without server-side verification with PayPal's API. This makes it possible for unauthenticated attackers to bypass payment requirements and confirm bookings as paid without any actual payment transaction occurring.

EPSS: 0.003 (24.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Themefic Hydra Booking — Appointment Scheduling & Calendar — versions 0

Weakness classification (CWE)

CWE-602

References

Frequently asked questions

What is CVE-2025-12788?: CVE-2025-12788 is a medium-severity vulnerability in Themefic Hydra Booking — Appointment Scheduling & Calendar, classified under CWE-602. CVSS score: 5.3/10. Published 2025-11-11.
How severe is CVE-2025-12788?: Medium severity. CVSS v3 base score is 5.3 out of 10.