CVE-2026-57123

PraisonAI: MCP SSE transport binds 0.0.0.0 with no authentication and no Origin validation; bundled SecurityConfig is never wired in

State: Published
Severity: 9.8 Critical
Published: Sep 14, 2026
Updated: Sep 14, 2026
Reserved: Jun 24, 2026

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Description

PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.59, ToolsMCPServer.run_sse and launch_tools_mcp_server bind to 0.0.0.0 and create /sse and /messages/ routes without invoking the available SecurityConfig authentication, origin-validation, or DNS-rebinding controls. Any reachable client can list and invoke registered tools, and a browser can target a local instance through DNS rebinding, with impact determined by the registered file, shell, and code-execution tools. This vulnerability is fixed in praisonaiagents 1.6.59.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-306 Missing Authentication for Critical Function
CWE-350 Reliance on Reverse DNS Resolution for a Security-Critical Action
CWE-1327 Binding to an Unrestricted IP Address

Affected Products

Product	Versions
praisonaiagentsMervinPraison	< 1.6.59Affected

References

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