CVE-2026-73483

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g	Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer	Third Party Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-13 12:17

Updated : 2026-09-03 19:00

NVD link : CVE-2026-73483

Mitre link : CVE-2026-73483

CVE.ORG link : CVE-2026-73483

JSON object : View

Products Affected

flowiseai

flowise

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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