What is CVE-2026-18031?

CVE-2026-18031 is a critical-severity vulnerability in Tabapay Gateway, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-08-19.

How severe is CVE-2026-18031?

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

Auth bypass in Tabapay Gateway

CVE-2026-18031

The TabaPay Gateway WordPress plugin through 1.4.0 does not validate the payment callback before establishing a session for the account associated with the referenced order, allowing unauthenticated attackers to log in as any registered user, including an administrator.

Vulnerability class: Broken Authentication

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 Tabapay Gateway

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

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

Frequently asked questions

What is CVE-2026-18031?: CVE-2026-18031 is a critical-severity vulnerability in Tabapay Gateway, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-08-19.
How severe is CVE-2026-18031?: Critical severity. CVSS v3 base score is 9.8 out of 10.