What is CVE-2026-67621?

CVE-2026-67621 is a high-severity vulnerability in Flowiseai Flowise, classified under Missing Authorization. CVSS score: 7.6/10. Published 2026-08-06.

How severe is CVE-2026-67621?

High severity. CVSS v3 base score is 7.6 out of 10.

Auth bypass in Flowiseai Flowise

CVE-2026-67621

Flowise through 3.1.4 contains a missing authorization vulnerability that allows authenticated workspace members to perform unauthorized document store operations by accessing unprotected mutation endpoints. Attackers holding only view-lev…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.

Affected products

Flowiseai Flowise — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-67621?: CVE-2026-67621 is a high-severity vulnerability in Flowiseai Flowise, classified under Missing Authorization. CVSS score: 7.6/10. Published 2026-08-06.
How severe is CVE-2026-67621?: High severity. CVSS v3 base score is 7.6 out of 10.