CVE-2026-41137 Flowise: Code Injection in CSVAgent leads to Authenticated RCE

Critical 9.4 Published 23 Apr 2026 Updated 23 Apr 2026

An authenticated attacker can execute arbitrary code on the server by injecting malicious payloads into the CSVAgent's custom Pandas read code field.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-41137?

CVE-2026-41137 is a critical code injection vulnerability in Flowiseai Flowise, published on 23 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, The CSVAgent allows providing a custom Pandas CSV read code. Due to lack of sanitization, an attacker can provide a command injection payload that will get interpolated and executed by the server. This vulnerability is fixed in 3.1.0.

Weakness: CWE-94

Which versions are affected by CVE-2026-41137?

4 open source packages ship an affected version, including flowise and flowise-components. It affects 1 product.

Package	Affected	Fixed in
`flowise` npm	All versions	`3.1.0`
`flowise` npm	All versions	`3.1.0`
`flowise-components` npm	All versions	`3.1.0`
`flowise-components` npm	All versions	`3.1.0`

Products include Flowiseai Flowise.

How do I fix CVE-2026-41137?

Upgrade flowise to 3.1.0 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-41137 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41137 exists.

All Flowiseai Flowise vulnerabilities

Sources

Also known as GHSA-9wc7-mj3f-74xv.