CVE-2026-46442 Details.
Flowise < 3.1.2 - node-custom-function Unauthorized RCE
Atlas does not check this one. Needs an outside server.
To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one.
About CVE-2026-46442. What It Means.
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…
Affected Product. What Is Hit.
- Vendor
- flowiseai
- Product
- Flowiseai Flowise
More CVEs In Flowiseai Flowise.
- CVE-2026-69251CriticalInformation onlyFlowise < 3.1.3 - Remote Code ExecutionFlowiseaiCVSS9.0
- CVE-2026-30824HighInformation onlyFlowise - NVIDIA NIM Endpoints Missing AuthenticationFlowiseaiCVSS8.6
- CVE-2026-56270HighInformation onlyFlowise <= 3.0.13 - Unauthenticated OAuth Configuration DisclosureFlowiseaiCVSS7.5
FAQ
Common Questions.
Flowise < 3.1.2 - node-custom-function Unauthorized RCE. 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…
No. To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one. The facts about CVE-2026-46442 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-46442 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Flowiseai Flowise to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-46442. Atlas does not run a check for it, so nothing here says whether a particular site is affected.