CVE-2016-2222

8.6 highEPSS 7.9%

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.

Severity

CVSS 3.0

8.6 high

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

EPSS: 7.9% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
Published: 2016-05-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

wordpress:wordpress

References

http://www.debian.org/security/2016/dsa-3472
http://www.securityfocus.com/bid/82454
http://www.securitytracker.com/id/1034933
https://codex.wordpress.org/Version_4.4.2
https://core.trac.wordpress.org/changeset/36435

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