CVE-2026-57139
Published:July 20, 2026
Updated:August 27, 2026
The published npm package "praisonai" exports a TypeScript "MCPServer" that can expose tools, resources, and prompts over an HTTP JSON-RPC transport with: The HTTP transport has no authentication or authorization path. "MCPServerConfig" does not expose an auth/security setting, "startHttp()" ignores the "Authorization" header, and every POST request is parsed and forwarded directly to "handleRequest()". That request handler dispatches sensitive MCP methods such as "tools/call", "resources/read", and "prompts/get". The implementation also calls "this.httpServer.listen(port)" without a host argument. In Node.js this binds to the unspecified address; the local PoV observed "{ address: "::", family: "IPv6" }", making the service reachable on all interfaces on systems where the port is exposed. This lets any network client that can reach the HTTP port list tools and invoke registered server-side tools without credentials. Supplying "Authorization: Bearer invalid" makes no difference.
Affected Packages
praisonai (NPM):
Affected version(s) >=1.5.0 <1.7.2Fix Suggestion:
Update to version 1.7.2Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH