On January 6 WordPress 5.8.3 was released along with updates to all versions since WordPress 3.7. This update should be installed as soon as possible because it fixes found security issues and vulnerabilities.
Fixed security issues
- Stored XSS through post slugs.
- Object injection in some multisite installations.
- SQL injection vulnerability in WP_Query.
- SQL injection vulnerability in WP_Meta_Query
Remember to create a backup before updating.
