What is CVE-2026-76586?

CVE-2026-76586 is a high-severity vulnerability in Appointment Booking Calendar Plugin And Scheduling, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-08-29.

How severe is CVE-2026-76586?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Appointment Booking Calendar Plugin And Scheduling

CVE-2026-76586

The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin before 1.6.3 does not verify the amount actually paid against the server-side price staged for a booking when confirming an online payment, allowing unauthenticated users to have a paid appointment approved for a fraction of its price.

EPSS: 0.001 (3.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Unknown Appointment Booking Calendar Plugin And Scheduling

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-76586?: CVE-2026-76586 is a high-severity vulnerability in Appointment Booking Calendar Plugin And Scheduling, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-08-29.
How severe is CVE-2026-76586?: High severity. CVSS v3 base score is 7.5 out of 10.