CVE-2026-55531

MediumCVSS 6.5/10Last modified Sep 9, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400CWE-770

Affected software

No affected versions have been published.

Timeline

Published
Aug 25, 2026
Last modified
Sep 9, 2026
NVD status
Deferred

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CVE-2026-55531: Medium severity, CVSS 6.5 | Vulnix