CVE-2021-24487: 
WordPress vulnerability analysis and mitigation

The St-Daily-Tip WordPress plugin through version 4.7 contains a security vulnerability identified as CVE-2021-24487. The vulnerability was discovered and publicly disclosed on September 21, 2021. This security issue affects the plugin's 'Default Text to Display if no tips' setting functionality, combining both Cross-Site Request Forgery (CSRF) and Cross-Site Scripting (XSS) vulnerabilities (WPScan Advisory).

The vulnerability stems from two main security issues: the absence of CSRF protection when saving the 'Default Text to Display if no tips' setting, and inadequate sanitization and escaping of output. The vulnerability has been assigned a CVSS v3.1 base score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The issue is classified under CWE-79 (Cross-site Scripting) and CWE-352 (Cross-Site Request Forgery) (NVD).

If exploited, this vulnerability could allow attackers to make logged-in administrators unknowingly set malicious payloads in the plugin's settings, resulting in stored Cross-Site Scripting. This could potentially lead to the execution of arbitrary JavaScript code in users' browsers, potentially compromising sensitive information or performing unauthorized actions on behalf of the user (WPScan Advisory).

As of the latest reports, there is no known fix available for this vulnerability. Users of the St-Daily-Tip WordPress plugin version 4.7 or earlier should consider either removing the plugin or implementing additional security controls to mitigate the risk (WPScan Advisory).