CVE-2023-23971: 
WordPress vulnerability analysis and mitigation

A Stored Cross-Site Scripting (XSS) vulnerability was discovered in the CodePeople WP Time Slots Booking Form WordPress plugin versions 1.1.81 and below. The vulnerability was identified on January 20, 2023, and requires administrator-level access to exploit (Patchstack).

The vulnerability stems from improper sanitization and escaping of certain plugin settings. This security flaw could allow high-privilege users such as administrators to perform Stored Cross-Site Scripting attacks, even in environments where the unfiltered_html capability is disabled, such as in multisite setups. The vulnerability has been assigned a CVSS v3.1 base score of 4.8 (Medium) by NIST with a vector string of CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N (WPScan).

If exploited, this vulnerability could allow malicious actors with administrative access to inject malicious scripts, including redirects, advertisements, and other HTML payloads into the website. These injected scripts would then be executed when guests visit the affected site (Patchstack).

The vulnerability has been patched in version 1.1.82 of the WP Time Slots Booking Form plugin. Users are advised to update to version 1.1.82 or later to remediate this security issue (WPScan).