What’s Vulnerable › Vulnerabilities

CVE-2026-57124: PraisonAI UI MCP connect endpoint allows unauthenticated local command execution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-09-15
• Weakness: CWE-78

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.

Affected products

• MervinPraison PraisonAI: before 4.6.59

References

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

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