WebPageTest Arbitrary PHP File Upload RCE

WebPageTest version 2.6 and earlier contains an arbitrary file upload vulnerability in the resultimage.php script. The application fails to validate or sanitize user-supplied input before saving uploaded files to a publicly accessible directory. This flaw allows remote attackers to upload and execute arbitrary PHP code, resulting in full remote code execution under the web server context.

www/getfile.php in WPO WebPageTest 19.04 on Windows allows Directory Traversal (for reading arbitrary files) because of an unanchored regular expression, as demonstrated by the a.jpg\.. substring.

WPO WebPageTest 19.04 allows SSRF because ValidateURL in www/runtest.php does not consider octal encoding of IP addresses (such as 0300.0250 as a replacement for 192.168).