PYSEC-2026-1087 Aim vulnerable to Cross-site Scripting

Cross-site Scripting XSS in aimhubio Aim 3.28.0 allows remote attackers to execute arbitrary JavaScript in victims browsers via malicious Python code submitted to the /api/reports endpoint, which is interpreted and executed by Pyodide when the report is viewed. No sanitisation or sandbox...

urllib3 does not control redirects in browsers and Node.js

urllib3 supports being used in a Pyodide runtime utilizing the JavaScript Fetch API or falling back on XMLHttpRequest. This means you can use Python libraries to make HTTP requests from your browser or Node.js. Additionally, urllib3 provides a mechanism to control redirects.However, the retries a...

PYSEC-2026-1997 urllib3 does not control redirects in browsers and Node.js

urllib3 supports being used in a Pyodide runtime utilizing the JavaScript Fetch API or falling back on XMLHttpRequest. This means you can use Python libraries to make HTTP requests from your browser or Node.js. Additionally, urllib3 provides a mechanism to control redirects. However, the retries...

Cohere AI Terrarium Sandbox Flaw Enables Root Code Execution, Container Escape

A critical security vulnerability has been disclosed in a Python-based sandbox called Terrarium that could result in arbitrary code execution. The vulnerability, tracked as CVE-2026-5752 , is rated 9.3 on the CVSS scoring system. "Sandbox escape vulnerability in Terrarium allows arbitrary code...

Incomplete List of Disallowed Inputs

Overview flowise-components is a Flowiseai Components Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs via the run function of the CSVAgents class when evaluating LLM-generated Python scripts in a pyodide environment without sufficient sandboxing. An attack...

Terrarium contains a vulnerability that allows arbitrary code execution

Overview Terrarium is a sandbox-based code execution platform that enables users to run and execute code in a controlled environment, providing a secure way to test and validate code. However, a vulnerability has been discovered in Terrarium that allows arbitrary code execution with root privileg...

GHSA-9WC7-MJ3F-74XV Flowise: Code Injection in CSVAgent leads to Authenticated RCE

Summary The CSVAgent allows providing a custom Pandas CSV read code. Due to lack of sanitization, an attacker can provide the following payload: DataFrame'foo': 'bar!';import os;os.system'whoami' that will get interpolated and executed by the server. Details The code in question that introduces t...

Flowise: Code Injection in CSVAgent leads to Authenticated RCE

Summary The CSVAgent allows providing a custom Pandas CSV read code. Due to lack of sanitization, an attacker can provide the following payload: DataFrame'foo': 'bar!';import os;os.system'whoami' that will get interpolated and executed by the server. Details The code in question that introduces t...

Arbitrary Code Injection

Overview flowise-components is a Flowiseai Components Affected versions of this package are vulnerable to Arbitrary Code Injection through the pythonCodeValidator and the Python execution paths in AirtableAgent.ts and CSVAgent.ts. An attacker can supply LLM-generated Python code that smuggles in...

GHSA-F228-CHMX-V6J6 Flowise: Remote code execution vulnerability in AirtableAgent.ts caused by lack of input verification when using `Pandas`.

Description Summary “AirtableAgent” is an agent function provided by FlowiseAI that retrieves search results by accessing private datasets from airtable.com. “AirtableAgent” uses Python, along with Pyodide and Pandas, to get and return results. The user’s input is directly applied to the question...

Exploit for Protection Mechanism Failure in N8N

N8Scape: CVE-2025-68668 Breakdown This is my personal writeup...

CVE-2026-25905

The Python code being run by 'runPython' or 'runPythonAsync' is not isolated from the rest of the JS code, allowing any Python code to use the Pyodide APIs to modify the JS environment. This may result in an attacker hijacking the MCP server - for malicious purposes including MCP tool shadowing...

GHSA-PFV4-WMPH-5GC6 MCP Run Python has a Sandbox Escape & Server Takeover Vulnerability

Impact Critical Sandbox Escape & Server Takeover: A critical security vulnerability exists in mcp-run-python due to a lack of isolation between the Python runtime Pyodide and the host JavaScript environment. The runPython and runPythonAsync functions execute Python code using Pyodide without...

MCP Run Python has a Sandbox Escape & Server Takeover Vulnerability

Impact Critical Sandbox Escape & Server Takeover: A critical security vulnerability exists in mcp-run-python due to a lack of isolation between the Python runtime Pyodide and the host JavaScript environment. The runPython and runPythonAsync functions execute Python code using Pyodide without...

CVE-2026-25905

The Python code being run by 'runPython' or 'runPythonAsync' is not isolated from the rest of the JS code, allowing any Python code to use the Pyodide APIs to modify the JS environment. This may result in an attacker hijacking the MCP server - for malicious purposes including MCP tool shadowing...

CVE-2026-25905 Lack of isolation in mcp-run-python leads to MCP server takeover

The Python code being run by 'runPython' or 'runPythonAsync' is not isolated from the rest of the JS code, allowing any Python code to use the Pyodide APIs to modify the JS environment. This may result in an attacker hijacking the MCP server - for malicious purposes including MCP tool shadowing...

CVE-2026-25905

The Python code being run by 'runPython' or 'runPythonAsync' is not isolated from the rest of the JS code, allowing any Python code to use the Pyodide APIs to modify the JS environment. This may result in an attacker hijacking the MCP server - for malicious purposes including MCP tool shadowing...

CVE-2026-25905 Lack of isolation in mcp-run-python leads to MCP server takeover

The Python code being run by 'runPython' or 'runPythonAsync' is not isolated from the rest of the JS code, allowing any Python code to use the Pyodide APIs to modify the JS environment. This may result in an attacker hijacking the MCP server - for malicious purposes including MCP tool shadowing...

CVE-2026-25905

CVE-2026-25905 describes a lack of isolation between Python code executed by runPython/runPythonAsync and the surrounding JavaScript environment. This lets Python code access Pyodide APIs to modify the JS context, which could enable an attacker to hijack the MCP server and shadow MCP tooling. The...

PT-2026-7090

Name of the Vulnerable Software and Affected Versions MCP affected versions not specified Description The Python code executed by the 'runPython' or 'runPythonAsync' functions lacks isolation from other JavaScript code. This allows Python code to utilize Pyodide APIs to alter the JavaScript...