Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Flowiseai | Flowise | <= 3.1.2 |
Related Weaknesses (CWE)
References
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6gExploitMitigationVendor Advisory
- https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteerThird Party Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6gExploitMitigationVendor Advisory
FAQ
What is CVE-2026-73483?
CVE-2026-73483 is a vulnerability with a CVSS score of 8.8 (HIGH). 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-c...
How severe is CVE-2026-73483?
CVE-2026-73483 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-73483?
Check the references section above for vendor advisories and patch information. Affected products include: Flowiseai Flowise.