CVE-2026-77689 — MEDIUM (5.3)

Vulnerability Description

The Booking for Appointments and Events Calendar WordPress plugin before 9.8.1 does not verify that a payment was actually taken before recording a booking as paid, trusting the payment gateway named in a public, unauthenticated booking request even when the site has never configured that gateway. This lets an unauthenticated attacker obtain confirmed, fully paid appointments and events without any payment being collected.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-284

References

https://wpscan.com/vulnerability/ac597716-193d-419f-b55c-802ee979385e/

FAQ

What is CVE-2026-77689?

CVE-2026-77689 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The Booking for Appointments and Events Calendar WordPress plugin before 9.8.1 does not verify that a payment was actually taken before recording a booking as paid, trusting the payment gateway named...

How severe is CVE-2026-77689?

CVE-2026-77689 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-77689?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.