NocoBase - VM Sandbox Escape to Remote Code Execution

NocoBase Workflow Script Node executes user-supplied JavaScript inside a Node.js vm sandbox with a custom require allowlist controlled by WORKFLOWSCRIPTMODULES env var. The console object passed into the sandbox context exposes host-realm WritableWorkerStdio stream objects via console.stdout and...

CVE-2026-54566

The Markdown Preview Enhanced extension for Visual Studio Code is vulnerable to Remote Code Execution (RCE) in versions prior to 0.8.29 . The root cause is the use of vm.runInNewContext to evaluate repository-controlled .crossnote/config.js and .crossnote/parser.js files, which fails to provide a...

CVE-2026-54566 Markdown Preview Enhanced: Remote Code Execution via VM Sandbox Escape in `.crossnote/config.js` and `.crossnote/parser.js`

Markdown Preview Enhanced is a Markdown preview extension for Visual Studio Code. Prior to 0.8.29, Markdown Preview Enhanced evaluates repository-controlled .crossnote/config.js and .crossnote/parser.js files with vm.runInNewContext, which does not provide a security boundary from the Node.js hos...

CVE-2026-54566 Markdown Preview Enhanced: Remote Code Execution via VM Sandbox Escape in `.crossnote/config.js` and `.crossnote/parser.js`

Markdown Preview Enhanced is a Markdown preview extension for Visual Studio Code. Prior to 0.8.29, Markdown Preview Enhanced evaluates repository-controlled .crossnote/config.js and .crossnote/parser.js files with vm.runInNewContext, which does not provide a security boundary from the Node.js hos...

CVE-2026-54566 Markdown Preview Enhanced: Remote Code Execution via VM Sandbox Escape in `.crossnote/config.js` and `.crossnote/parser.js`

Markdown Preview Enhanced is a Markdown preview extension for Visual Studio Code. Prior to 0.8.29, Markdown Preview Enhanced evaluates repository-controlled .crossnote/config.js and .crossnote/parser.js files with vm.runInNewContext, which does not provide a security boundary from the Node.js hos...

CVE-2026-77077

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit...

EUVD-2026-63266

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit...

CVE-2026-77077 n8n before 1.123.69 Remote Code Execution via EventEmitter Prototype Pollution

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit...

CVE-2026-77077

n8n versions before 1.123.69, 2.33.4, and 2.34.1 have a VM sandbox escape in the task runner: the prototype-freezing routine misses internal constructors like EventEmitter, allowing an authenticated user with Code node access to pollute prototypes and execute arbitrary commands. The corruption is...

CVE-2026-77077 n8n before 1.123.69 Remote Code Execution via EventEmitter Prototype Pollution

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit...

CVE-2026-77077 n8n before 1.123.69 Remote Code Execution via EventEmitter Prototype Pollution

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit...

CVE-2026-77077: Improper Control of Generation of Code

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit...

CVE-2026-77083: Improperly Controlled Modification of Object Prototype Attributes

n8n is a workflow automation platform. In versions prior to 1.123.69, 2.33.4, and 2.34.1, the JavaScript Code node's VM sandbox did not freeze the sandbox's Function.prototype, allowing an authenticated user with the ability to create and execute workflows to pollute it from within a Code node...

PT-2026-78938

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.69 n8n versions prior to 2.33.4 n8n versions prior to 2.34.1 Description An authenticated user with permissions to create and execute workflows can achieve a sandbox escape within the JavaScript Code node. This occu...

NocoBase Workflow Script Node VM Sandbox Escape RCE

Exploits CVE-2026-34156 in NocoBase Workflow Script Node. The module leverages an exposed host-realm WritableWorkerStdio stream object console.stdout / console.stderr to traverse the prototype chain, obtain the host-realm's Function constructor, and execute arbitrary commands bypassing the Node.j...

NocoBase 2.0.27 - VM Sandbox Escape

Exploit Title: NocoBase 2.0.27 - VM Sandbox Escape Date: 2026-03-26 Exploit Author: Onurcan Genç Vendor Homepage: https://www.nocobase.com/ Software Link: https://github.com/nocobase/nocobase Version: -u -P --cmd "id" python3 exploit.py -t TARGE...

CVE-2025-34267: Improper Neutralization of Special Elements used in a Command

Flowise v3.0.1 3.0.8 and all versions after with 'ALLOWBUILTINDEP' enabled contain an authenticated remote code execution vulnerability and node VM sandbox escape due to insecure use of integrated modules Puppeteer and Playwright within the nodevm execution environment. An authenticated attacker...