Vulnerability Report
Core Medium Patch path listed CVE-2012-4421

WordPress Core < 3.4.2 - Missing Authorization Checks on create_post

The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.

Quick Answer

CVE-2012-4421 is a medium severity with CVSS 6.3 Vulnerability issue affecting the Core WordPress. It affects Versions before 3.4.2 and is fixed in 3.4.2.

Published
Sep 06, 2012
Last Updated
Jan 22, 2024
Slug
wordpress
Operational Summary

What the operator needs to know

Patch Status
Patched release is available
Remediation
Update to version 3.4.2, or a newer patched version
Operator Briefing

CVE-2012-4421 is tracked for the Core WordPress as medium severity with CVSS 6.3. The affected range is Versions before 3.4.2. Update WordPress to 3.4.2 or newer where that version is compatible with the site.

Issue Type
Vulnerability
Primary Fixed Version
3.4.2
Primary Affected Range
Versions before 3.4.2
Tracking ID
CVE-2012-4421
Detailed Metadata
Software Type Core
Software Slug
wordpress
CVE CVE-2012-4421
Patched Versions
3.4.2
Affected Versions
Versions before 3.4.2
Licensing Notices

This record contains material that is subject to copyright

DEFIANT
Copyright 2012-2026 Defiant Inc.

License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. Read more

MITRE
Copyright 1999-2026 The MITRE Corporation

License: CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. Read more