CVE-2026-57124

PraisonAI UI MCP connect endpoint allows unauthenticated local command execution

Description

PraisonAI is a multi-agent teams system. Prior to 4.6.59, the default UI host applications expose POST /api/mcp/connect without mandatory authentication and accept caller-controlled command and args values that PraisonAIUI passes to StdioMCPClient to start a local process. Because the UI commands bind to 0.0.0.0 by default, a reachable unauthenticated client can execute commands as the UI service account even when the MCP handshake later fails. This vulnerability is fixed in 4.6.59.

Scores

Weaknesses (CWE)

• CWE-78
• CWE-306

Advisories

• GHSA-p75f-6fp4-p57w — PraisonAI: Missing Authentication for Critical Function and Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in praisonai
• PYSEC-2026-3517 — PraisonAI: Missing Authentication for Critical Function and Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in praisonai

European references

• ENISA EUVD · EUVD-2026-77598
• GCVE · GCVE-0-2026-57124

Affected products

References

• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-p75f-6fp4-p57w
• https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9
• https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59

Sources