CVE-2022-21663

WordPress is a free and open-source content management system written in PHP and paired with a MariaDB database. On a multisite, users with Super Admin role can bypass explicit/additional hardening under certain conditions through object injection. This has been patched in WordPress version 5.8.3. Older affected versions are also fixed via security release, that go back till 3.7.37. We strongly recommend that you keep auto-updates enabled. There are no known workarounds for this issue.

• CWE-74
• CWE-502

• https://blog.sonarsource.com/wordpress-object-injection-vulnerability/Exploit, Third Party Advisory
• https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-jmmq-m8p8-332hThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/01/msg00019.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4UNEC63UU5GEU47IIR4RMTZAHNEOJG/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DM6XPH3JN6V4NF4WBOJTOXZIVE6VKKE3/
• https://wordpress.org/news/2022/01/wordpress-5-8-3-security-release/Release Notes, Vendor Advisory
• https://www.debian.org/security/2022/dsa-5039Third Party Advisory
• https://blog.sonarsource.com/wordpress-object-injection-vulnerability/Exploit, Third Party Advisory
• https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-jmmq-m8p8-332hThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/01/msg00019.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4UNEC63UU5GEU47IIR4RMTZAHNEOJG/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DM6XPH3JN6V4NF4WBOJTOXZIVE6VKKE3/
• https://wordpress.org/news/2022/01/wordpress-5-8-3-security-release/Release Notes, Vendor Advisory
• https://www.debian.org/security/2022/dsa-5039Third Party Advisory

Published

Jan 6, 2022

Last Modified

Jun 17, 2026

Status

Modified

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