WordPress 5.8.1, a security and maintenance release announced last week, fixes 60 bugs and several vulnerabilities.
These vulnerabilities affect WordPress versions between 5.4 and 5.8. All versions starting with 5.4 have been updated and they include patches for the vulnerabilities.
WordPress developers also mentioned that XSS and privilege escalation vulnerabilities affecting the block editor have been identified and patched during the beta testing period for version 5.8.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has advised users and administrators to review the release notes and upgrade their installations. Websites that support automatic background updates should already be updated.