What is CVE-2026-41276?

CVE-2026-41276 is a critical-severity vulnerability in Flowiseai Flowise, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-04-23.

How severe is CVE-2026-41276?

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

Auth bypass in Flowiseai Flowise

CVE-2026-41276

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, this vulnerability allows remote attackers to bypass authentication on affected installations of FlowiseAI Flowise. Authentication is…

Vulnerability class: Broken Authentication

EPSS: 0.069 (93.3th percentile) — read the EPSS interpretation.

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

Flowiseai Flowise — versions < 3.1.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-41276?: CVE-2026-41276 is a critical-severity vulnerability in Flowiseai Flowise, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-04-23.
How severe is CVE-2026-41276?: Critical severity. CVSS v3 base score is 9.8 out of 10.