CVE-2021-29447

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    CVE-2021-29447

    Published: 15 Apr 2021Last Modified: 21 Sept 2026

    Summary:

    Details: 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.

    References: http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html, 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, http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html, https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 965fcddcf68cf4fd122ae24b992e242dfea1d773
    Fixed -5e3f55fde8ff1adc4a750b0ed7b20c50068230c0

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-29447 | CVE-DB