PHP through 7.1.11 enables potential SSRF in applications that accept an fsockopen or pfsockopen hostname argument with an expectation that the port number is constrained. Because a :port syntax is recognized, fsockopen will use the port number that is specified in the hostname argument, instead of the port number in the second argument of the function.
2017-03-27T17:59:00.977
2025-04-20T01:37:25.860
Deferred
CVSSv3.0: 7.4 (HIGH)
AV:N/AC:M/Au:N/C:P/I:P/A:N
8.6
4.9