What is CVE-2026-84734?

CVE-2026-84734 is a critical-severity vulnerability in Mindstien Quick Login, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-10-11.

How severe is CVE-2026-84734?

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

Auth bypass in Mindstien Quick Login

CVE-2026-84734

The Mindstien Quick Login WordPress plugin through 1.0 does not correctly validate a value supplied in the request against the visitor's own session before authenticating them, allowing unauthenticated attackers to obtain a session as the administrator account the Mindstien Quick Login WordPress plugin through 1.0 is configured with.

Vulnerability class: Broken Authentication

Published 2026-10-11 · last modified 2026-10-11.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Mindstien Quick Login

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

wpscan.com/vulnerability/648d461c-6610-4566-a310-b02187d68cc9/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-84734?: CVE-2026-84734 is a critical-severity vulnerability in Mindstien Quick Login, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-10-11.
How severe is CVE-2026-84734?: Critical severity. CVSS v3 base score is 9.8 out of 10.