CVE-2026-1920

Booktics <= 1.0.16 - Missing Authorization to Addon Plugin Installation

2026-03-09 13:22

Strategic Overview

Status: Patched in 1.0.17
Affected Plugin: Booktics – Appointment Booking Calendar for Service Businesses
Affected Version: <= 1.0.16
CVSS: 5.3Medium
Weakness type: CWE-306 · Missing Authentication for Critical Function
CVE: CVE-2026-1920

View all Booktics – Appointment Booking Calendar for Service Businesses vulnerabilities

At a glance

CVE-2026-1920 is a medium-severity Missing Authentication for Critical Function vulnerability in the Booktics WordPress plugin, affecting versions <= 1.0.16. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.0.17; sites on affected versions should update now. Disclosed March 2026, reported by Kazuma Matsumoto.

Vulnerability Overview

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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-306: Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Remediation

Update to version 1.0.17, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Booktics 1.0.17 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-1920 https://www.wordfence.com/threat-intel/vulnerabilities/id/ab051f4a-030a-44aa-8cbf-665c6c6d31a7 https://nvd.nist.gov/vuln/detail/CVE-2026-1920

Related records

Same weakness class

5.3CVE-2026-1919: Booktics <= 1.0.16 Get ItemsCVE-2026-1919

Other vulnerabilities in Booktics – Appointment Booking Calendar for Service Businesses

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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