CVE-2026-1919

Booktics <= 1.0.16 - Missing Authorization to Get Items via REST API endpoints

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-2026-1919

View all Booktics – Appointment Booking Calendar for Service Businesses vulnerabilities

At a glance

CVE-2026-1919 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 access of data due to a missing capability check on multiple REST API endpoints in all versions up to, and including, 1.0.16. This makes it possible for unauthenticated attackers to query sensitive data.

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-2026-1919 https://www.wordfence.com/threat-intel/vulnerabilities/id/c88dcf62-4b6c-4ff0-8530-5aefd54bd347 https://nvd.nist.gov/vuln/detail/CVE-2026-1919

Related records

Same weakness class

5.3CVE-2026-1920: Booktics <= 1.0.16 Addon Plugin InstallationCVE-2026-1920

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:L/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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