CVE-2016-2222
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- EPSS
- 7.87% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- wordpress/wordpress
- Source
- security@debian.org
EPSS 7.9% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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_4.4.2Patch
- https://core.trac.wordpress.org/changeset/36435
- https://hackerone.com/reports/110801Exploit
- https://news.ycombinator.com/item?id=20433070
- https://wordpress.org/news/2016/02/wordpress-4-4-2-security-and-maintenance-release/Patch, Vendor Advisory
- https://wpvulndb.com/vulnerabilities/8376
- 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_4.4.2Patch
- https://core.trac.wordpress.org/changeset/36435
- https://hackerone.com/reports/110801Exploit
- https://news.ycombinator.com/item?id=20433070
- https://wordpress.org/news/2016/02/wordpress-4-4-2-security-and-maintenance-release/Patch, Vendor Advisory
- https://wpvulndb.com/vulnerabilities/8376
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.