Yesterday evening September 8, 2021, WordPress 5.8.1 was released to the public. The informed version addresses a security issue and fixes 60 issues. For more see it note.
According to WordPress:
Dawaffe, a member of the WordPress Security Team, helped fix a security flaw in the REST API.
Michał Bentkowski of Securitum reported an XSS vulnerability in the block editor.
Lodash library was updated to version 4.17.21 for upstream security fixes.
Η team WordPress security thanks the following for their help:
Evan Ricafort for reporting an XSS vulnerability to the block editor of version 5.8.
and Steve Henty for reporting a privilege escalation issue again to the block editor.
You can download the update from official site, or upgrade your page from the admin panel Dashboard – Updates