CVE-2026-34156
CVE-2026-34156 · NocoBase Affected by Sandbox Escape to RCE via console._stdout Prototype Chain Traversal in Workflow Script Node
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 10.0 · Critical · EPSS 35.0% · Public exploit · Fix available
- Published
- Updated
Stack: node
Affected products and versions
nocobase
- Versions
- < 2.0.28: Affected
No fix published
@nocobase/plugin-workflow-javascript npm
- Affected ranges
- SEMVER: < 2.0.28
Update to 2.0.28