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WordPress wordpress core

WordPress Core < 4.4.2 — Server-Side Request Forgery

CVE-2016-2222Published · Updated

Action summary

Affected: ≤4.4.1Update to 3.7.13 or 3.8.13 or 3.9.11 or 4.0.10 or 4.1.10 or 4.2.7 or 4.3.3 or 4.4.2 or newer

Fixed versions are per release branch: update to the fix for the branch you run.

All remediation steps
Watch core
Severity
Medium6.4
CVSS
6.4
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-918 SSRF
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

WordPress wordpress

  1. Affected≤ 4.4.1
  2. Patched in3.7.13 / 3.8.13 / 3.9.11 / 4.0.10 / 4.1.10 / 4.2.7 / 4.3.3 / 4.4.2

Update to 3.7.13 / 3.8.13 / 3.9.11 / 4.0.10 / 4.1.10 / 4.2.7 / 4.3.3 / 4.4.2 or newer.

You are affected if you run ≤ 4.4.1. Version 3.7.13, 3.8.13, 3.9.11, 4.0.10, 4.1.10, 4.2.7, 4.3.3, 4.4.2 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WordPress.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to one of the following versions, or a newer patched version: 3.7.13, 3.8.13, 3.9.11, 4.0.10, 4.1.10, 4.2.7, 4.3.3, 4.4.2
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch WordPress to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Ronnie Skansing.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

Same weakness (SSRF)

All SSRF
Other SSRF vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity medium, CVSS 6.4

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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