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CVE-2026-73483 Details

Description

Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@flowiseai/nodevm JavaScript sandbox. An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in the official Docker image) and arbitrary host file disclosure via Chromium's file:// URL handling. In versions 3.0.8–3.1.2 exploitation requires ALLOW_BUILTIN_DEP=true; earlier versions are exploitable by default. Fixed in 3.1.3.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g	CISA-ADP	ExploitMitigationVendor Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g	[email protected]	ExploitMitigationVendor Advisory
https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-78	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')	[email protected]

Affected Products

Product	Versions
flowiseai flowise	<= 3.1.2
CPE cpe:2.3:a:flowiseai:flowise:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 3, 2026	Initial Analysis	[email protected]
Aug 14, 2026	CVE Modified	CISA-ADP
Aug 13, 2026	New CVE Received	[email protected]