CVE-2026-34935: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MervinPraison PraisonAI
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.
AI Analysis
Technical Summary
PraisonAI versions 4.5.15 through 4.5.68 contain an OS command injection vulnerability (CWE-78) due to improper neutralization of special elements in the --mcp CLI argument. The argument is passed unchecked through shlex.split() and anyio.open_process(), enabling an attacker to execute arbitrary OS commands with the privileges of the process user. This vulnerability has been patched in version 4.5.69.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary operating system commands with the privileges of the PraisonAI process user. This can lead to full compromise of the affected system, including unauthorized data access, modification, or destruction, and disruption of service. The CVSS 3.1 base score of 9.8 reflects critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade PraisonAI to version 4.5.69 or later, where this vulnerability has been patched. Since the vendor advisory confirms the issue is fixed in 4.5.69, applying this official fix is the recommended remediation. No other mitigations are indicated by the vendor.
CVE-2026-34935: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MervinPraison PraisonAI
Description
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.
CVSS v3.1
Score 9.8critical
Affected software
pkg:github/mervinpraison/PraisonAIRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PraisonAI versions 4.5.15 through 4.5.68 contain an OS command injection vulnerability (CWE-78) due to improper neutralization of special elements in the --mcp CLI argument. The argument is passed unchecked through shlex.split() and anyio.open_process(), enabling an attacker to execute arbitrary OS commands with the privileges of the process user. This vulnerability has been patched in version 4.5.69.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary operating system commands with the privileges of the PraisonAI process user. This can lead to full compromise of the affected system, including unauthorized data access, modification, or destruction, and disruption of service. The CVSS 3.1 base score of 9.8 reflects critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade PraisonAI to version 4.5.69 or later, where this vulnerability has been patched. Since the vendor advisory confirms the issue is fixed in 4.5.69, applying this official fix is the recommended remediation. No other mitigations are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-31T17:27:08.660Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d046900a160ebd9263e693
Added to database: 04/03/2026, 23:00:32 UTC
Last enriched: 04/11/2026, 09:21:05 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 150
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