CVE-2026-34156
Description
NocoBase is an AI-powered no-code/low-code platform for building business applications and enterprise solutions. Prior to version 2.0.28, NocoBase's Workflow Script Node executes user-supplied JavaScript inside a Node.js vm sandbox with a custom require allowlist (controlled by WORKFLOW_SCRIPT_MODULES env var). However, the console object passed into the sandbox context exposes host-realm WritableWorkerStdio stream objects via console._stdout and console._stderr. An authenticated attacker can traverse the prototype chain to escape the sandbox and achieve Remote Code Execution as root. This issue has been patched in version 2.0.28.
How to fix
- nocobase nocobase2.0.28 or later
- @nocobase/plugin-workflow-javascript2.0.28 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nocobase nocobase | v < 2.0.28 | 2.0.28 |
| @nocobase/plugin-workflow-javascriptnpm | v < 2.0.28 | 2.0.28 |
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Attack Surface Management
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