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.
Affected products
nocobase: nocobase
References3
- github.com/nocobase/nocobase/security/advisories/GHSA-px3p-vgh9… ExploitMitigationVendor Advisory
- github.com/nocobase/nocobase/pull/8967 Issue TrackingPatch
- github.com/nocobase/nocobase/releases/tag/v2.0.28 ProductRelease Notes
Metrics
- CVSS 3.1
-
9.9
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 35% percentile: 98 · as of 12 November 2026
- CWE
- CWE-913
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.