CVE-2026-46442
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, POST /api/v1/node-custom-function lacks route-level authorization, allowing any authenticated user or API key to submit arbitrary JavaScript to the Custom JS Function node. When E2B_APIKEY is not configured — the common deployment case — Flowise executes this code inside a NodeVM sandbox. This sandbox can be escaped, allowing an attacker to reach the host process object and execute system commands via child_process. The result is authenticated remote code execution on the Flowise server host. This issue has been patched in version 3.1.2.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flowisenpm | < 3.1.2 | 3.1.2 |
Affected products
2Patches
Vulnerability mechanics
References
4- github.com/FlowiseAI/Flowise/security/advisories/GHSA-9rvc-vf7m-pgm2nvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-9rvc-vf7m-pgm2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-46442ghsaADVISORY
- github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2nvdProductRelease NotesWEB
News mentions
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