Vulnerability DatabaseCVE-2016-2222
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CVE-2016-2222
Published:May 22, 2016
Updated:August 06, 2026
The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote attackers to conduct server-side request forgery (SSRF) attacks via a zero value in the first octet of an IPv4 address in the u parameter to wp-admin/press-this.php.
Related Resources (10)
https://codex.wordpress.org/Version_4.4.2
http://www.securitytracker.com/id/1034933
https://wordpress.org/news/2016/02/wordpress-4-4-2-security-and-maintenance-release/
http://www.securityfocus.com/bid/82454
https://security-tracker.debian.org/tracker/CVE-2016-2222
https://hackerone.com/reports/110801
http://www.debian.org/security/2016/dsa-3472
https://news.ycombinator.com/item?id=20433070
https://wpvulndb.com/vulnerabilities/8376
https://core.trac.wordpress.org/changeset/36435
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
EPSS
Base Score:
7.87