CVE-2021-29447

Wordpress is an open source CMS. A user with the ability to upload files (like an Author) can exploit an XML parsing issue in the Media Library leading to XXE attacks. This requires WordPress installation to be using PHP 8. Access to internal files is possible in a successful XXE attack. This has been patched in WordPress version 5.7.1, along with the older affected versions via a minor release. We strongly recommend you keep auto-updates enabled.

Score

CVSS 3.1 7.1 High

Status

Modified - security-advisories@github.com

Published

2021-04-15

Last modified

2024-08-03

Weaknesses

CWE-611

Affected products

• Debian Linux (Debian)
• Wordpress (Wordpress)
• Wordpress-develop (Wordpress)

References

• http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html
• http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html
• https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/
• https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh
• https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html
• https://wordpress.org/news/category/security/
• https://www.debian.org/security/2021/dsa-4896