CVE-2026-34935
PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command()
CVSS Score
9.8
EPSS Score
0.1%
EPSS Percentile
24th
PraisonAI is a multi-agent teams system. From version 4.5.15 to before version 4.5.69, the --mcp CLI argument is passed directly to shlex.split() and forwarded through the call chain to anyio.open_process() with no validation, allowlist check, or sanitization at any hop, allowing arbitrary OS command execution as the process user. This issue has been patched in version 4.5.69.
| CWE | CWE-78 |
| Vendor | mervinpraison |
| Product | praisonai |
| Published | Apr 3, 2026 |
| Last Updated | Apr 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
MervinPraison / PraisonAI
>= 4.5.15, < 4.5.69