← Vulnerability feed

Vulnerability record · CVE-2026-34935 · published 3 April 2026

CVE-2026-34935: Praisonai os command injection vulnerability

Praison · 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.

9.8 CVSS 3.1 Critical EPSS 0.99% · top 38.9% CWE-78 · OS command injection
9.8CVSS 3.1 base score
0.99%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
24 Jul 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/MervinPraison/PraisonAI/commit/47bff65413beaa3c21bf633c1fae4e684348368c Patch
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-9gm9-c8mq-vq7m ExploitVendor Advisory

Track CVE-2026-34935 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-40114Praisonai server-side request forgery (ssrf) vulnerabilityPraisonAI is a multi-agent teams system. Prior to 4.5.128, the /api/v1/runs endpoint accepts an arbitrary webhook_url in the request body with no URL…EPSS 0.34%10.0CVE-2026-39305Praisonai path traversal vulnerabilityPraisonAI is a multi-agent teams system. Prior to 1.5.113, the Action Orchestrator feature contains a Path Traversal vulnerability that allows an att…EPSS 0.43%10.0CVE-2026-34955Praisonai os command injection vulnerabilityPraisonAI is a multi-agent teams system. Prior to version 4.5.97, SubprocessSandbox in all modes (BASIC, STRICT, NETWORK_ISOLATED) calls subprocess.r…EPSS 0.39%9.9CVE-2026-39888Praisonai vulnerabilityPraisonAI is a multi-agent teams system. Prior to 1.5.115, execute_code() in praisonaiagents.tools.python_tools defaults to sandbox_mode="sandbox", w…EPSS 0.61%9.8CVE-2026-41497Praisonai command injection vulnerabilityPraisonAI is a multi-agent teams system. Prior to version 4.6.9, the fix for PraisonAI's MCP command handling does not add a command allowlist or arg…EPSS 0.77%9.8CVE-2026-40288Praisonai os command injection vulnerabilityPraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the workflow engine is vulnerable to …EPSS 0.92%9.8CVE-2026-39890Praisonai deserialization of untrusted data vulnerabilityPraisonAI is a multi-agent teams system. Prior to 4.5.115, the AgentService.loadAgentFromFile method uses the js-yaml library to parse YAML files wit…EPSS 0.81%9.8CVE-2026-34934Praisonai sql injection vulnerabilityPraisonAI is a multi-agent teams system. Prior to version 4.5.90, the get_all_user_threads function constructs raw SQL queries using f-strings with u…EPSS 0.60%

Source: NIST National Vulnerability Database (record CVE-2026-34935), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.