What is CVE-2026-1920?

CVE-2026-1920 is a medium-severity vulnerability in Arraytics Booktics – Booking Calendar For Appointments And Service Businesses, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-03-10.

How severe is CVE-2026-1920?

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

Auth bypass in Arraytics Booktics – Booking Calendar For Appointments And Service Businesses

CVE-2026-1920

The Booking Calendar for Appointments and Service Businesses – Booktics plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'Extension_Controller::update_item_permissions_check' function in all versions up to, and including, 1.0.16. This makes it possible for unauthenticated attackers to install addon plugins.

Vulnerability class: Broken Authentication

Published 2026-03-10 · last modified 2026-06-17.

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

EPSS: 0.002 (12.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Arraytics Booktics – Booking Calendar For Appointments And Service Businesses — versions 0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Frequently asked questions

What is CVE-2026-1920?: CVE-2026-1920 is a medium-severity vulnerability in Arraytics Booktics – Booking Calendar For Appointments And Service Businesses, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-03-10.
How severe is CVE-2026-1920?: Medium severity. CVSS v3 base score is 5.3 out of 10.