What is CVE-2026-81422?

CVE-2026-81422 is a medium-severity vulnerability in Advanced Appointment Booking & Scheduling, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-11-09.

How severe is CVE-2026-81422?

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

Auth bypass in Advanced Appointment Booking & Scheduling

CVE-2026-81422

The Advanced Appointment Booking & Scheduling WordPress plugin before 2.7 does not verify the site's user-registration setting before creating accounts through a publicly accessible shortcode, allowing unauthenticated attackers to register arbitrary user accounts, and be automatically logged in, even when user registration is disabled on the site.

Vulnerability class: Broken Access Control

Published 2026-11-09 · last modified 2026-11-09.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Advanced Appointment Booking & Scheduling

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

wpscan.com/vulnerability/05f00d47-0014-456b-ade8-994113b5507c/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-81422?: CVE-2026-81422 is a medium-severity vulnerability in Advanced Appointment Booking & Scheduling, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-11-09.
How severe is CVE-2026-81422?: Medium severity. CVSS v3 base score is 5.3 out of 10.