WordPress core <= 5.8 - Data Exposure via REST API vulnerability

Data Exposure via REST API vulnerability discovered by Michael Adams in WordPress core (versions <= 5.8).

Version update list: 5.8 updated to 5.8.1, 5.7.2 updated to 5.7.3, 5.7.1 updated to 5.7.3, 5.7 updated to 5.7.3, 5.6.4 updated to 5.6.5, 5.6.3 updated to 5.6.5, 5.6.2 updated to 5.6.5, 5.6.1 updated to 5.6.5, 5.6 updated to 5.6.5, 5.5.5 updated to 5.5.6, 5.5.4 updated to 5.5.6, 5.5.3 updated to 5.5.6, 5.5.2 updated to 5.5.6, 5.5.1 updated to 5.5.6, 5.5 updated to 5.5.6, 5.4.6 updated to 5.4.7, 5.4.5 updated to 5.4.7, 5.4.4 updated to 5.4.7, 5.4.3 updated to 5.4.7, 5.4.2 updated to 5.4.7, 5.4.1 updated to 5.4.7, 5.4 updated to 5.4.7

Solution

           Update the WordPress core to the latest available version (at least 5.8.1).