What is CVE-2026-41270?

CVE-2026-41270 is a high-severity vulnerability in Flowiseai Flowise, classified under Improper Access Control. CVSS score: 7.1/10. Published 2026-04-23.

How severe is CVE-2026-41270?

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

SSRF in Flowiseai Flowise

CVE-2026-41270

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Server-Side Request Forgery (SSRF) protection bypass vulnerability exists in the Custom Function feature. While the application implements SSRF protection via HTTP_DENY_LIST for axios and node-fetch libraries, the built-in Node.js http, https, and net modules are allowed in the NodeVM sandbox without equivalent protection. This allows authenticated users to bypass SSRF controls and access internal network resources (e.g., cloud provider metadata services) This vulnerability is fixed in 3.1.0.

EPSS: 0.002 (14.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Flowiseai Flowise — versions < 3.1.0
Flowiseai Flowise-components — versions < 3.1.0

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2026-41270?: CVE-2026-41270 is a high-severity vulnerability in Flowiseai Flowise, classified under Improper Access Control. CVSS score: 7.1/10. Published 2026-04-23.
How severe is CVE-2026-41270?: High severity. CVSS v3 base score is 7.1 out of 10.