Vulnerability Description
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, the MCP HTTP Stream _validate_origin method accepts request_origin.startswith(allowed), so the attacker-controlled localhost.evil.example HTTP origin matches the localhost allowlist. Without an API key, a malicious webpage can submit tools/call requests to the local MCP server and execute exposed tools. This issue is fixed in version 4.6.58.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/MervinPraison/PraisonAI/commit/2f9677abb2ea68eab864ee8b6a828f
- https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.58
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-wj6g-v78p-6f
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-wj6g-v78p-6f
FAQ
What is CVE-2026-55529?
CVE-2026-55529 is a vulnerability with a CVSS score of 6.9 (MEDIUM). PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, the MCP HTTP Stream _validate_origin method accepts request_origin.startswith(allowed), so the attacker-controlled localhost.evil.ex...
How severe is CVE-2026-55529?
CVE-2026-55529 has been rated MEDIUM with a CVSS base score of 6.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55529?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.