CVE-2026-41270

HIGH
Published April 23, 2026

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...

Full CISO analysis pending enrichment.

Severity & Risk

CVSS 3.1
7.1 / 10
EPSS
N/A
Exploitation Status
No known exploitation
Sophistication
N/A

Attack Surface

AV AC PR UI S C I A
AV Network
AC High
PR Low
UI None
S Unchanged
C High
I High
A Low

Recommended Action

No patch available

Monitor for updates. Consider compensating controls or temporary mitigations.

Compliance Impact

Compliance analysis pending. Sign in for full compliance mapping when available.

Frequently Asked Questions

What is 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 i

Is CVE-2026-41270 actively exploited?

No confirmed active exploitation of CVE-2026-41270 has been reported, but organizations should still patch proactively.

How to fix CVE-2026-41270?

No patch is currently available. Monitor vendor advisories for updates.

What is the CVSS score for CVE-2026-41270?

CVE-2026-41270 has a CVSS v3.1 base score of 7.1 (HIGH).

Technical Details

NVD Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Timeline

Published
April 23, 2026
Last Modified
April 23, 2026
First Seen
April 23, 2026