nmap version 6.49BETA6 through 7.60, up to and including SVN revision 37147 contains a Directory Traversal vulnerability in NSE script http-fetch that can result in file overwrite as the user is running it. This attack appears to be exploitable via a victim that runs NSE script http-fetch against a malicious web site. This vulnerability appears to have been fixed in 7.7. https://nvd.nist.gov/vuln/detail/CVE-2018-1000161