Vulnerability Description
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, the MCP HTTP Stream mcp_post handler creates a new _sessions entry for every initialize request but does not call _cleanup_sessions or enforce a maximum. An unauthenticated caller can exhaust memory. The fix invokes cleanup and limits sessions through PRAISONAI_MCP_MAX_SESSIONS. 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-wv94-5qcp-6m
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-wv94-5qcp-6m
FAQ
What is CVE-2026-55531?
CVE-2026-55531 is a vulnerability with a CVSS score of 6.5 (MEDIUM). PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, the MCP HTTP Stream mcp_post handler creates a new _sessions entry for every initialize request but does not call _cleanup_sessions ...
How severe is CVE-2026-55531?
CVE-2026-55531 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55531?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.