Auth bypass in Mervinpraison Praisonaiagents
CVE-2026-57123
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.
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mervinpraison Praisonaiagents — versions < 1.6.59
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-57123?
- CVE-2026-57123 is a critical-severity vulnerability in Mervinpraison Praisonaiagents, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-09-14.
- How severe is CVE-2026-57123?
- Critical severity. CVSS v3 base score is 9.8 out of 10.