CVE-2026-41270: Flowise is a drag & drop user interface to build a customized large language model flow

Q: How do I fix CVE-2026-41270?

flowise: upgrade to 3.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-41270 being exploited?

CVE-2026-41270 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-41270 affect?

CVE-2026-41270 affects flowise. Severity is high (CVSS 7.1). 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 imple

Q: How urgent is CVE-2026-41270?

Priority 33/100. High severity; Public exploit reference

Routine

HIGH 7.1UPGRADE

CVE-2026-41270 is a high-severity flaw (CVSS 7.1) affecting flowise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 authen

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-284, CWE-918
Published	2026-04-23
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: flowiseai

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-23 20:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

flowiseai flowise UPGRADE

Affected: < 3.1.0

Fixed in: 3.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy flowise || rpm -q flowise || flowise --version

2. UPGRADE to 3.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flowise

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flowise

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41270?

flowise: upgrade to 3.1.0. Exact commands for each OS are on this page.

Is CVE-2026-41270 being exploited?

CVE-2026-41270 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41270 affect?

CVE-2026-41270 affects flowise. Severity is high (CVSS 7.1). 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 imple

How urgent is CVE-2026-41270?

Priority 33/100. High severity; Public exploit reference

Software pages

Node.js vulnerabilities · Axios vulnerabilities

Related CVEs

CVE-2026-41268 CRITICAL 9.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-41276 CRITICAL 9.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-40933 CRITICAL 9.9 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-41265 CRITICAL 9.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-41137 HIGH 8.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow

References

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