VULNERABILITY INTELLIGENCE
CVE-2026-55531
CVSS score6.5 MEDIUM
EPSS probability0.45%
CISA KEVNot currently listed
Published2026-08-25
Last modified2026-09-09
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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.
Weakness classification
- security-advisories@github.com: CWE-400