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CVE-2016-2222

The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote...

8.6 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

7.87%Up 5.9 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 8.6

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.

Record
CVE-2016-2222
CVSS 3.0
8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2016-2222
Updated
2026-11-02
EUVDEUVD-2016-3306 No score

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.

Record
EUVD-2016-3306
Updated
2026-11-03
GitHub AdvisoriesGHSA-5r7p-x5gj-698r 8.6

The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote...

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.

Record
GHSA-5r7p-x5gj-698r
CVSS 3.0
8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSV 8.6

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.

Record
CVE-2016-2222
CVSS 3.0
8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2016-2222 8.6

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.

Record
DEBIAN-CVE-2016-2222
CVSS 3.0
8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2016-2222 8.6

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.

Record
UBUNTU-CVE-2016-2222
CVSS 3.0
8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wordpress
Debian:12
 before 4.4.2+dfsg-1
4.4.2+dfsg-1
wordpress
Debian:13
 before 4.4.2+dfsg-1
4.4.2+dfsg-1
wordpress
Debian:14
 before 4.4.2+dfsg-1
4.4.2+dfsg-1
wordpress
Debian:6.0
From an advisory covering 2 CVEs
 before 3.6.1+dfsg-1~deb6u9, plus listed versions
3.0.4+dfsg-13.0.5+dfsg-0+squeeze13.0.5+dfsg-13.2.1+dfsg-13.2.1+dfsg-2
Show 25 moreShow less
3.2.1+dfsg-33.3+dfsg-13.3.1+dfsg-13.3.2+dfsg-13.3.2+dfsg-1~squeeze13.4+dfsg-13.4+dfsg-23.4+dfsg-33.4.1+dfsg-13.4.2+dfsg-13.5+dfsg-13.5.1+dfsg-13.5.1+dfsg-23.5.2+dfsg-13.5.2+dfsg-1~deb6u13.5.2+dfsg-1~deb7u13.6+dfsg-13.6.1+dfsg-1~deb6u13.6.1+dfsg-1~deb6u23.6.1+dfsg-1~deb6u33.6.1+dfsg-1~deb6u43.6.1+dfsg-1~deb6u53.6.1+dfsg-1~deb6u63.6.1+dfsg-1~deb6u73.6.1+dfsg-1~deb6u8
3.6.1+dfsg-1~deb6u9
wordpress
Debian:7
From an advisory covering 2 CVEs
 before 3.6.1+dfsg-1~deb7u10, plus listed versions
3.5.1+dfsg-23.5.2+dfsg-13.5.2+dfsg-1~deb6u13.5.2+dfsg-1~deb7u13.6+dfsg-1
Show 17 moreShow less
3.6.1+dfsg-1~deb6u13.6.1+dfsg-1~deb6u23.6.1+dfsg-1~deb6u33.6.1+dfsg-1~deb6u43.6.1+dfsg-1~deb6u53.6.1+dfsg-1~deb6u63.6.1+dfsg-1~deb6u73.6.1+dfsg-1~deb6u83.6.1+dfsg-1~deb6u93.6.1+dfsg-1~deb7u13.6.1+dfsg-1~deb7u23.6.1+dfsg-1~deb7u33.6.1+dfsg-1~deb7u43.6.1+dfsg-1~deb7u53.6.1+dfsg-1~deb7u63.6.1+dfsg-1~deb7u83.6.1+dfsg-1~deb7u9
3.6.1+dfsg-1~deb7u10
wordpress
Debian:8
From an advisory covering 2 CVEs
 before 4.1+dfsg-1+deb8u8, plus listed versions
4.1+dfsg-14.1+dfsg-1+deb8u14.1+dfsg-1+deb8u24.1+dfsg-1+deb8u34.1+dfsg-1+deb8u44.1+dfsg-1+deb8u54.1+dfsg-1+deb8u64.1+dfsg-1+deb8u7
4.1+dfsg-1+deb8u8

History

History
RecordedChangedSources
affected, facts
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-2222 is a high vulnerability (CVSS 8.6) in Wordpress, published February 8, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.87%, the 94th percentile. Fixed in wordpress 4.4.2+dfsg-1.

References

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