CVE-2023-51695: 
WordPress vulnerability analysis and mitigation

A Stored Cross-Site Scripting (XSS) vulnerability was discovered in WPEverest's Everest Forms WordPress plugin, affecting versions up to 2.0.4.1. The vulnerability was publicly disclosed on December 27, 2023, and was assigned CVE-2023-51695. The plugin, which is used for building contact forms, surveys, polls, and application forms in WordPress, contains this security flaw that affects users with administrative privileges (Patchstack, WPScan).

The vulnerability stems from improper sanitization and escaping of certain plugin settings. This security issue allows high-privilege users such as administrators to perform Stored Cross-Site Scripting attacks, even in scenarios where the unfiltered_html capability is disallowed, 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, while Patchstack rates it at 5.9 (Medium) with a vector string of CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L (NVD).

The 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 be executed when guests visit the affected site (Patchstack).

The vulnerability has been patched in version 2.0.5 of the Everest Forms plugin. Site administrators are advised to update to version 2.0.5 or later to remove the vulnerability. For Patchstack users, enabling auto-update for vulnerable plugins is recommended as an additional security measure (Patchstack).