{"id":"GHSA-9gvv-qjj3-2p6g","summary":"Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium","details":"Flowise (packages flowise and flowise-components) in versions \u003c= 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.","aliases":["CVE-2026-73483"],"modified":"2026-10-07T16:30:05.292544404Z","published":"2026-10-07T16:17:02Z","database_specific":{"cwe_ids":[],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-10-07T16:17:02Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73483"},{"type":"PACKAGE","url":"https://github.com/FlowiseAI/Flowise"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer"}],"affected":[{"package":{"name":"flowise","ecosystem":"npm","purl":"pkg:npm/flowise"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.1.3"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 3.1.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-9gvv-qjj3-2p6g/GHSA-9gvv-qjj3-2p6g.json"}},{"package":{"name":"flowise-components","ecosystem":"npm","purl":"pkg:npm/flowise-components"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.1.3"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 3.1.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-9gvv-qjj3-2p6g/GHSA-9gvv-qjj3-2p6g.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}