CVE-2026-57123Public exploitNetwork attack vectorHinoki check available

Unauthenticated tool execution via unguarded MCP SSE routes

Published Sep 14, 2026 · Updated Sep 14, 2026

Missing authentication in praisonaiagents before 1.6.59 allows remote attackers to invoke registered tools through MCP SSE routes. ToolsMCPServer.run_sse and launch_tools_mcp_server mount /sse and /messages/ without invoking the package's SecurityConfig authentication, Origin, or DNS-rebinding controls. Any client that can reach the listener, or a browser redirected to a local instance through DNS rebinding, can list and invoke registered tools, including file, shell, or code-execution tools when configured.

CVSS severity9.8
Critical
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authentication in praisonaiagents before 1.6.59 allows remote attackers to invoke registered tools through MCP SSE routes. ToolsMCPServer.run_sse and launch_tools_mcp_server mount /sse and /messages/ without invoking the package's SecurityConfig authentication, Origin, or DNS-rebinding controls. Any client that can reach the listener, or a browser redirected to a local instance through DNS rebinding, can list and invoke registered tools, including file, shell, or code-execution tools when configured.

The record

CVE
CVE-2026-57123
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
PraisonAI
Product
praisonaiagents
Classifications
CWE-306, CWE-1327, CWE-350, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.6.59

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PraisonAI · praisonaiagentsversion=< 1.6.59

Published CVSS scores

9.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-1327Binding to an Unrestricted IP Address
CWE-350Reliance on Reverse DNS Resolution for a Security-Critical Action
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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