CVE-2017-7189: PHP

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

main/streams/xp_socket.c in PHP 7.x before 2017-03-07 misparses fsockopen calls, such as by interpreting fsockopen('127.0.0.1:80', 443) as if the address/port were 127.0.0.1:80:443, which is later truncated to 127.0.0.1:80. This behavior has a security risk if the explicitly provided port number (i.e., 443 in this example) is hardcoded into an application as a security policy, but the hostname argument (i.e., 127.0.0.1:80 in this example) is obtained from untrusted input.

Affected products

• PHP PHP: from 7.0.0, before 7.0.16 (fixed in 7.0.16)

Published 2019-07-10. Last modified 2026-06-17.