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Vulnerability record · CVE-2026-57123 · published 14 September 2026

CVE-2026-57123: Missing authentication for critical function vulnerability

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.

9.8 CVSS 3.1 Critical EPSS 0.90% · top 41.8% CWE-306 · Missing authentication for critical functionCWE-350 · CWE-350 Deferred
9.8CVSS 3.1 base score
0.90%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
15 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9
https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x227-pf99-vffg

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Source: NIST National Vulnerability Database (record CVE-2026-57123), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.