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CVE-2026-40288PYSEC-2026-477GHSA-VC46-VW85-3WVMPYSEC-2026-488

PraisonAI: Critical RCE via `type: job` workflow YAML

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.5.139, 1.5.140
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: yes
  • Technical impact: total

Summary

PraisonAI 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 arbitrary command and code execution through untrusted YAML files. When praisonai workflow run <file.yaml> loads a YAML file with type: job, the JobWorkflowExecutor in job_workflow.py processes steps that support run: (shell commands via subprocess.run()), script: (inline Python via exec()), and python: (arbitrary Python script execution)—all without any validation, sandboxing, or user confirmation. The affected code paths include action_run() in workflow.py and _exec_shell(), _exec_inline_python(), and _exec_python_script() in job_workflow.py. An attacker who can supply or influence a workflow YAML file (particularly in CI pipelines, shared repositories, or multi-tenant deployment environments) can achieve full arbitrary command execution on the host system, compromising the machine and any accessible data or credentials. This issue has been fixed in versions 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • MervinPraison PraisonAI

    fixed in 4.5.139

  • MervinPraison praisonaiagents

    fixed in 1.5.140

  • praisonaiPyPI

    fixed in 4.5.139

  • praisonaiagentsPyPI

    fixed in 1.5.140

References 1

GitHub · MervinPraison/PraisonAI