What is CVE-2026-18776?

CVE-2026-18776 is a critical-severity vulnerability in Truebooker, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-08-19.

How severe is CVE-2026-18776?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Truebooker

CVE-2026-18776

The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in some of its AJAX actions, allowing unauthenticated users to change the email address of arbitrary users, including administrators, and subsequently take over their account via the password reset flow.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Unknown Truebooker

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

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

Frequently asked questions

What is CVE-2026-18776?: CVE-2026-18776 is a critical-severity vulnerability in Truebooker, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-08-19.
How severe is CVE-2026-18776?: Critical severity. CVSS v3 base score is 9.8 out of 10.