PraisonAI UI MCP connect endpoint allows unauthenticated local command execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass, Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-306 and CWE-78.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MervinPraison | PraisonAI | before 4.6.59 | 4.6.59 | Patch available | CNA |
| — | praisonai (PyPI) | before 4.6.59 | 4.6.59 | Patch available | GHSA-p75f-6fp4-p57w |
- PraisonAI VendorMervinPraison Affected before 4.6.59 Fixed in 4.6.59 Patch available CNA
- praisonai (PyPI) Vendor— Affected before 4.6.59 Fixed in 4.6.59 Patch available GHSA-p75f-6fp4-p57w
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* | — | — | MervinPraison |
- cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* Versions — — ·MervinPraison
Remediation
- Fix · CNA PraisonAI (MervinPraison) Fixed in 4.6.59
- Fix · GHSA-p75f-6fp4-p57w praisonai (PyPI) Fixed in 4.6.59 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-57124
- 2026-10-03 Alias added: GHSA-p75f-6fp4-p57w
References
More MervinPraison vulnerabilities
- TI-2026-79619 Missing authentication in PraisonAI AgentOS exposes agent chat CVSS 3.1CRITICAL 9.8
- TI-2026-71236 Missing access control in PraisonAI AgentTeam exposes agent endpoints CVSS 3.1CRITICAL 9.8
- TI-2026-44052 PraisonAI before 1.6.78 Remote Code Execution via CodeAgent CVSS 4.0CRITICAL 10.0
- TI-2026-41123 praisonai-platform 0.1.4 still boots on the hardcoded JWT secret dev-secret-change-me (default-open production guard) CVSS 3.1CRITICAL 9.8
- TI-2026-41122 praisonai-platform: default JWT signing secret 'dev-secret-change-me' enables token forgery CVSS 3.1CRITICAL 9.8
- TI-2026-41118 PraisonAI MCPServer exposes unauthenticated HTTP tools/call CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-57124 · CVE Program
- CVE-2026-57124 · NVD
- FIRST EPSS
- GHSA-p75f-6fp4-p57w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences