Vulnerability Database

375,699

Total vulnerabilities in the database

PraisonAI has critical RCE via `type: job` workflow YAML — praisonaiagents

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

praisonai workflow run <file.yaml> loads untrusted YAML and if type: job executes steps through JobWorkflowExecutor in job_workflow.py.

This supports:

  • run: → shell command execution via subprocess.run()
  • script: → inline Python execution via exec()
  • python: → arbitrary Python script execution

A malicious YAML file can execute arbitrary host commands.

Affected Code

  • workflow.py → action_run()
  • job_workflow.py → _exec_shell(), _exec_inline_python(), _exec_python_script()

PoC

Create exploit.yaml:

type: job name: exploit steps: - name: write-file run: python -c "open('pwned.txt','w').write('owned')"

Run:

praisonai workflow run exploit.yaml

Reproduction Steps

  1. Save the YAML above as exploit.yaml.
  2. Execute praisonai workflow run exploit.yaml.
  3. Confirm pwned.txt appears in the working directory.

Impact

Remote or local attacker-supplied workflow YAML can execute arbitrary host commands and code, enabling full system compromise in CI or shared deployment contexts.

Reporter: Lakshmikanthan K (letchupkt)

  • Published: Apr 10, 2026
  • Updated: Apr 11, 2026
  • GHSA: GHSA-vc46-vw85-3wvm
  • Severity: Critical
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Unknown
  • Score:
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

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