CVE-2026-34156 | THREATINT

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.

PUBLISHED Reserved 2026-03-25 | Published 2026-03-31 | Updated 2026-04-02 | Assigner GitHub_M

CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-913: Improper Control of Dynamically-Managed Code Resources

Product status

< 2.0.28

affected

References

github.com/...cobase/security/advisories/GHSA-px3p-vgh9-m57c

github.com/nocobase/nocobase/pull/8967

github.com/nocobase/nocobase/releases/tag/v2.0.28

cve.org (CVE-2026-34156)

nvd.nist.gov (CVE-2026-34156)

Download JSON