CVE-2021-24137: 
WordPress vulnerability analysis and mitigation

CVE-2021-24137 is a SQL Injection vulnerability discovered in the Blog2Social WordPress plugin versions prior to 6.3.1. The vulnerability was identified in the Re-Share Posts feature, which allows authenticated users to inject arbitrary SQL commands due to unvalidated input. The issue was publicly disclosed on May 29, 2020, and was later assigned a CVE identifier on January 14, 2021 (WPScan).

The vulnerability exists in the Re-Share Posts feature of Blog2Social plugin version 6.3.0 and earlier. It has been classified as a SQL Injection (SQLI) vulnerability with a CVSS score of 9.9 (Critical). The vulnerability is categorized under OWASP Top 10 A1: Injection and CWE-89. The issue stems from improper input validation in the plugin's functionality (WPScan).

The vulnerability allows authenticated users to inject arbitrary SQL commands into the database, potentially leading to unauthorized access to sensitive data, modification of database contents, or compromise of the WordPress installation's integrity (WPScan).

The vulnerability has been patched in version 6.3.1 of the Blog2Social plugin. Users are strongly advised to update to this version or later to mitigate the risk (WPScan).