Analytical use of cookies
CVE-2026-34156: nocobase vulnerability
CVE-2026-34156: critical vulnerability affecting nocobase. Check CVSS, KEV status, business impact and recommended administrator actions.
- CVSS
- 9.9 CRITICAL
- EPSS
- 98.3%
- Known exploited
- not in KEV
- Product
- nocobase
What is known
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.
Business impact
Successful exploitation of CVE-2026-34156, a critical vulnerability (CVSS 9.9) affecting nocobase, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.
Recommended administrator action
Confirm whether nocobase is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.