CVE-2026-34156
NocoBase Affected by Sandbox Escape to RCE via console._stdout Prototype Chain Traversal in Workflow Script Node
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.
INFO
Published Date :
March 31, 2026, 2:16 p.m.
Last Modified :
April 7, 2026, 8:57 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update NocoBase to version 2.0.28.
- Ensure WORKFLOW_SCRIPT_MODULES is configured securely.
- Review sandbox execution contexts.
Public PoC/Exploit Available at Github
CVE-2026-34156 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34156.
| URL | Resource |
|---|---|
| https://github.com/nocobase/nocobase/pull/8967 | Issue Tracking Patch |
| https://github.com/nocobase/nocobase/releases/tag/v2.0.28 | Product Release Notes |
| https://github.com/nocobase/nocobase/security/advisories/GHSA-px3p-vgh9-m57c | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34156 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34156
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
NocoBase Sandbox Escape to RCE via console._stdout Prototype Chain Traversal (CVE-2026-34156)
cve cve-2026-34156 nocobase exploit nodejs poc prototype-pollution rce sandbox-escape security vulnerability
Python
CVE-2026-34156
Python
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34156 vulnerability anywhere in the article.
-
Daily CyberSecurity
Public PoC and Technical Details Disclosed for Apache Syncope RCE
A new report from SecureLayer7 has unmasked a high-severity Remote Code Execution (RCE) vulnerability in Apache Syncope, a cornerstone of identity lifecycle management and access governance in many en ... Read more
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Daily CyberSecurity
Root Access at Risk: Critical Nix Sandbox Escape Overwrites Sensitive System Files
A severe security vulnerability has been identified in the Nix package manager, a tool celebrated by the Linux and Unix communities for making package management reliable and reproducible. Tracked as ... Read more
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Daily CyberSecurity
Sandbox Escape: Critical Flatpak Flaw Grants Full Host Access
Flatpak, the widely-used system for building, distributing, and running sandboxed desktop applications on Linux, has been hit by a critical security vulnerability. The flaw, tracked as CVE-2026-34078 ... Read more
-
Daily CyberSecurity
Critical 9.8 CVSS Flaw in Cisco SSM On-Prem Grants Unauthenticated Root Access
Cisco has recently dropped a high-stakes security advisory regarding a critical vulnerability in its Smart Software Manager On-Prem (SSM On-Prem). Labeled as CVE-2026-20160, this flaw carries a CVSS s ... Read more
-
Daily CyberSecurity
Ghost in the Drone: Unauthenticated Shell Access in PX4 Autopilot’s 9.8 CVSS Nightmare
A critical security advisory has been issued for the PX4 Autopilot system. The vulnerability, tracked as CVE-2026-1579, carries a CVSS score of 9.8, highlighting a “nightmare scenario” for unhardened ... Read more
-
Daily CyberSecurity
ASUS Issues Security Patch for Router Vulnerability
In a move to fortify home and office networks, ASUS has released a security update for several of its router models. The update targets a high-severity vulnerability that could allow attackers to hija ... Read more
The following table lists the changes that have been made to the
CVE-2026-34156 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 07, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:nocobase:nocobase:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.28 Added Reference Type GitHub, Inc.: https://github.com/nocobase/nocobase/pull/8967 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/nocobase/nocobase/releases/tag/v2.0.28 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/nocobase/nocobase/security/advisories/GHSA-px3p-vgh9-m57c Types: Exploit, Mitigation, Vendor Advisory -
New CVE Received by [email protected]
Mar. 31, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-913 Added Reference https://github.com/nocobase/nocobase/pull/8967 Added Reference https://github.com/nocobase/nocobase/releases/tag/v2.0.28 Added Reference https://github.com/nocobase/nocobase/security/advisories/GHSA-px3p-vgh9-m57c