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Advisory details: github_osv / GHSA-9gvv-qjj3-2p6g
Advisory ID github_osv/GHSA-9gvv-qjj3-2p6g
Aliases CVE-2026-73483
Summary Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium 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.
Status Published
Exploitability 0.5
Weighted Severity 8.5
Risk 4.2
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv4 9.4 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-9gvv-qjj3-2p6g/GHSA-9gvv-qjj3-2p6g.json
generic_textual CRITICAL
Reference id Reference type URL
https://github.com/FlowiseAI/Flowise
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g
https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer
CVE-2026-73483 https://nvd.nist.gov/vuln/detail/CVE-2026-73483
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-9gvv-qjj3-2p6g/GHSA-9gvv-qjj3-2p6g.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.