CVE-2026-55531

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 v3.1

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

CVSS v3.1

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

EPSS

0.25% chance of exploitation in the next 30 days, 16th percentile

Published

2026-08-25

Proof-of-concept exploits (1)

• advisories/GHSA-wv94-5qcp-6m36

References

• CVE Record
• NVD entry

Related

• CVE-2026-55530
• CVE-2026-55532
• CVE-2026-5553
• CVE-2026-55533
• CVE-2026-55529
• CVE-2026-55534