Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium

Date Oct 7, 2026

Type Vendor advisory

Signal Critical vendor advisory

Vendor / Product npm · flowise

CVE CVE-2026-73483

Critical vendor advisory CVE-2026-73483

Summary

Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium

Why it matters

GitHub has published a reviewed security advisory for flowise. Prioritize it with other application dependency updates, especially because EPSS places it in the 48% percentile.

Operator check

Check whether flowise is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 9.4. EPSS probability: 0.6%; percentile: 48%.

Sources

GitHub Advisory GHSA-9gvv-qjj3-2p6g NVD — CVE-2026-73483 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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