CVE-2026-41268Public exploitNetwork attack vector

Unauthenticated command execution via parameter override bypass

Published Apr 23, 2026 · Updated Apr 23, 2026

Remote command execution in Flowise before 3.1.0 allows remote attackers to run arbitrary commands through a public chatflow. The replaceInputsWithConfig function accepts FILE-STORAGE:: anywhere in an override value, skips isParameterEnabled, and passes attacker-controlled NODE_OPTIONS to a Custom MCP process. Exploitation requires a public chatflow containing an MCP tool with API Override enabled, and command execution occurs inside the Flowise container.

CVSS severity9.8
Critical
EPSS probability13.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote command execution in Flowise before 3.1.0 allows remote attackers to run arbitrary commands through a public chatflow. The replaceInputsWithConfig function accepts FILE-STORAGE:: anywhere in an override value, skips isParameterEnabled, and passes attacker-controlled NODE_OPTIONS to a Custom MCP process. Exploitation requires a public chatflow containing an MCP tool with API Override enabled, and command execution occurs inside the Flowise container.

The record

CVE
CVE-2026-41268
Published
Apr 23, 2026
Updated
Apr 23, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-20, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FlowiseAI · Flowiseversion=< 3.1.0

Published CVSS scores

7.7GitHub, Inc.CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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