CVE-2026-34156
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).
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 35.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 34.97% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-913
- Affected
- nocobase/nocobase
- Source
- security-advisories@github.com
References
- https://github.com/nocobase/nocobase/pull/8967Issue Tracking, Patch
- https://github.com/nocobase/nocobase/releases/tag/v2.0.28Product, Release Notes
- https://github.com/nocobase/nocobase/security/advisories/GHSA-px3p-vgh9-m57cExploit, Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.