Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override

Summary A sandbox escape vulnerability in executeJavaScriptCode allows any authenticated user to execute arbitrary system commands as root on the Flowise server. The function accepts caller-provided nodeVMOptions that override the default sandbox security settings via JavaScript's spread operator...

EUVD-2026-52742

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, executeJavaScriptCode accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/components/src/utils.ts. An authenticated attacker reaching...

CVE-2026-69254 Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, executeJavaScriptCode accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/components/src/utils.ts. An authenticated attacker reaching...

CVE-2026-47139

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to http, https, http2, net, dgram, tls, dns, and dns/promises is blocked. However, Node.js also exposes...

CVE-2026-47141 vm2: NodeVM observability builtins leak host process and HTTP request data

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnosticschannel, asynchooks, and perfhooks builtins are not blocked by the dangerous builtin denylist. These modules...

CVE-2026-47141 vm2: NodeVM observability builtins leak host process and HTTP request data

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnosticschannel, asynchooks, and perfhooks builtins are not blocked by the dangerous builtin denylist. These modules...

CVE-2026-47139 vm2: NodeVM network builtin exclusions bypass via internal _http_client and _http_server

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to http, https, http2, net, dgram, tls, dns, and dns/promises is blocked. However, Node.js also exposes...

CVE-2026-47139 vm2: NodeVM network builtin exclusions bypass via internal _http_client and _http_server

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to http, https, http2, net, dgram, tls, dns, and dns/promises is blocked. However, Node.js also exposes...

CVE-2026-46442

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...

CVE-2026-46442

Flowise prior to v3.1.2 exposes an unauthenticated route POST /api/v1/node-custom-function that can accept arbitrary JavaScript in a Custom JS Function node. If E2B_APIKEY is not configured, code runs in a NodeVM sandbox and can be escaped to reach host process and execute system commands, enabli...

CVE-2026-43998

A flaw was found in vm2 3.10.5. NodeVM require.root path checks use path.resolve without dereferencing symlinks, while Node require follows symlinks, allowing sandboxed code to load host modules outside the allowed root and achieve remote code execution. Fixed in 3.11.0...

browserstack-runner vulnerable to Remote Code Execution via vm sandbox escape in _log HTTP handler

Summary The HTTP handler /log in lib/server.js lines 491–515 of browserstack-runner passes unauthenticated user-supplied data to vm.runInNewContext combined with eval, enabling a sandbox escape and arbitrary code execution on the host system. Details When browserstack-runner starts, it creates an...

GHSA-9G8X-92Q2-P28F NodeVM observability builtins leak host process and HTTP request data

Summary NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The following builtins are not blocked by the dangerous builtin denylist: text diagnosticschannel asynchooks perfhooks These modules are process-wide, not sandbox-local. Sandboxed code c...

NodeVM observability builtins leak host process and HTTP request data

Summary NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The following builtins are not blocked by the dangerous builtin denylist: text diagnosticschannel asynchooks perfhooks These modules are process-wide, not sandbox-local. Sandboxed code c...

GHSA-R9PM-GXMW-WV6P NodeVM network builtin exclusions bypass via internal _http_client and _http_server

Summary NodeVM supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to http, https, http2, net, dgram, tls, dns, and dns/promises is blocked. However, Node.js also exposes underscored internal HTTP builtins such as httpclient and...

GHSA-RP36-8XQ3-R6C4 NodeVM builtin denylist bypass via process and inspector/promises allows host code execution

Summary NodeVM blocks several dangerous Node.js builtins such as module, workerthreads, cluster, vm, repl, and inspector. However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach host-side execution primitives. This allows sandboxed code to bypass...

NodeVM builtin denylist bypass via process and inspector/promises allows host code execution

Summary NodeVM blocks several dangerous Node.js builtins such as module, workerthreads, cluster, vm, repl, and inspector. However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach host-side execution primitives. This allows sandboxed code to bypass...

PT-2026-45022

Name of the Vulnerable Software and Affected Versions vm2 versions prior to 3.11.4 Description NodeVM allows the exclusion of public network builtins from the wildcard builtin option, which blocks direct access to modules such as 'http', 'https', 'http2', 'net', 'dgram', 'tls', 'dns', and...

PT-2026-41207

Name of the Vulnerable Software and Affected Versions Flowise versions prior to 3.1.2 Description The endpoint "/api/v1/node-custom-function" lacks route-level authorization, which allows any authenticated user or holder of a valid API key to submit arbitrary JavaScript to the Custom JS Function...

CVE-2026-44007

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.1, when a NodeVM is created with nesting: true, sandbox code can unconditionally require'vm2' regardless of the outer VM's require configuration — including require: false. With access to vm2, the sandbox constructs a new inner NodeVM wi...