What is CVE-2026-18779?

CVE-2026-18779 is a medium-severity vulnerability in Truebooker, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-08-19.

How severe is CVE-2026-18779?

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

Auth bypass in Truebooker

CVE-2026-18779

The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in one of its AJAX actions, allowing unauthenticated users to delete arbitrary appointment records along with their associated booking items and payment records.

Vulnerability class: Broken Access Control

EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.

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.

Affected products

Unknown Truebooker

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

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

Frequently asked questions

What is CVE-2026-18779?: CVE-2026-18779 is a medium-severity vulnerability in Truebooker, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-08-19.
How severe is CVE-2026-18779?: Medium severity. CVSS v3 base score is 5.3 out of 10.