CVE-2024-2273: 
WordPress vulnerability analysis and mitigation

The Gutenberg Blocks by Kadence Blocks – Page Builder Features plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2024-2273) affecting all versions up to and including 3.2.34. The vulnerability was discovered and reported by Dau Hoang Tai, with the fix being implemented in version 3.2.35 (NVD, WPScan).

The vulnerability stems from insufficient input sanitization and output escaping in several parameters of the plugin's shortcode attributes. This security flaw has been assigned a CVSS v3.1 base score of 5.4 (Medium) by NIST with a vector string of CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, while Wordfence assessed it at 6.4 (Medium) with a vector string of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. The vulnerability is classified as CWE-79: Improper Neutralization of Input During Web Page Generation (NVD).

When exploited, this vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever any user accesses the compromised page, potentially affecting higher-privileged users such as administrators (WPScan).

The vulnerability requires an authenticated user with at least contributor-level access to exploit. The attack vector is network-accessible (AV:N) with low attack complexity (AC:L) and requires low privileges (PR:L) (NVD).

Users are advised to update their Gutenberg Blocks by Kadence Blocks plugin to version 3.2.35 or later, which contains the fix for this vulnerability (WPScan).