What is CVE-2026-39730?

CVE-2026-39730 is a high-severity vulnerability in Marcin Wise Chat, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-10-06.

How severe is CVE-2026-39730?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Marcin Wise Chat

CVE-2026-39730

Missing Authorization vulnerability in Marcin Wise Chat wise-chat allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Wise Chat: from n/a through 3.4.2.

Vulnerability class: Broken Access Control

Published 2026-10-06 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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

Marcin Wise Chat

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

patchstack.com/database/wordpress/plugin/wise-chat/vulnerability/wordpress-wise… (vdb-entry)

Frequently asked questions

What is CVE-2026-39730?: CVE-2026-39730 is a high-severity vulnerability in Marcin Wise Chat, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-10-06.
How severe is CVE-2026-39730?: High severity. CVSS v3 base score is 7.1 out of 10.