What is CVE-2026-56270?

CVE-2026-56270 is a high-severity vulnerability in Flowise, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-06-24.

How severe is CVE-2026-56270?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Flowise

CVE-2026-56270

Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OA…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Flowise — versions 0, 3.1.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56270?: CVE-2026-56270 is a high-severity vulnerability in Flowise, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-06-24.
How severe is CVE-2026-56270?: High severity. CVSS v3 base score is 7.5 out of 10.