CVE-2026-46442 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-46442CRITICAL

FlowiseAI Flowise — Flowise: Authenticated Host RCE via POST /api/v1/node-custom-function and NodeVM Sandbox Escape

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   N   H   H   H    9.4   .0349   88.2     —

AFFECTED
  Product  Versions   Fixed
  Flowise  < 3.1.2 –  —

TIMELINE
  May 13  Reserved by GitHub_M
  Jun 8   EXPLOIT PUBLISHED — CVE-2026-46442 (FlowiseAI Flowise). Public exploit reference added.
  Jun 8   Published (CNA: GitHub_M)

CWE-94 · CNA: GitHub_M · CVSS v4.0 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 13, 2026	Reserved	Reserved by GitHub_M
June 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-46442 (FlowiseAI Flowise). Public exploit reference added.
June 8, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
FlowiseAI	Flowise	—	< 3.1.2	—

Weaknesses

CWE-94

References (2)

https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2 [Product, Release Notes]
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9rvc-vf7m-pgm2 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-46442 at cve.org

Vendors: flowiseai

Weaknesses: CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-46442 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.