Description
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.
Remediation
References
Related Vulnerabilities
WordPress Plugin NextGEN Gallery-WordPress Gallery Local File Inclusion (2.1.56)
Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2012-4403)
WordPress Plugin Broken Link Checker Cross-Site Scripting (1.11.19)