PraisonAI is a multi-agent teams system. Prior to 4.5.128, PraisonAI’s MCP (Model Context Protocol) integration allows spawning background servers via stdio using user-supplied command strings (e.g., MCP("npx -y @smithery/cli ...")). These commands are executed through Python’s subprocess module. By default, the implementation forwards the entire parent process environment to the spawned subprocess. As a result, any MCP command executed in this manner inherits all environment variables from the host process, including sensitive data such as API keys, authentication tokens, and database credentials. This behavior introduces a security risk when untrusted or third-party commands are used. In common scenarios where MCP tools are invoked via package runners such as npx -y, arbitrary code from external or potentially compromised packages may execute with access to these inherited environment variables. This creates a risk of unintended credential exposure and enables potential supply chain attacks through silent exfiltration of secrets. This vulnerability is fixed in 4.5.128.
References
| Link | Resource |
|---|---|
| https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-pj2r-f9mw-vrcq | Vendor Advisory |
Configurations
History
20 Apr 2026, 18:33
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Praison
Praison praisonai |
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| References | () https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-pj2r-f9mw-vrcq - Vendor Advisory | |
| CPE | cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* |
10 Apr 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-10 17:17
Updated : 2026-04-20 18:33
NVD link : CVE-2026-40159
Mitre link : CVE-2026-40159
CVE.ORG link : CVE-2026-40159
JSON object : View
Products Affected
praison
- praisonai