CVE-2024-13595: 
WordPress vulnerability analysis and mitigation

The Simple Signup Form plugin for WordPress (CVE-2024-13595) contains a SQL Injection vulnerability discovered in February 2025. The vulnerability affects all versions up to and including 1.6.5, specifically through the 'id' attribute of the 'ssf' shortcode. This security issue stems from insufficient parameter escaping and inadequate SQL query preparation (NVD Database).

The vulnerability is classified as CWE-89 (SQL Injection) with a CVSS v3.1 base score of 6.5 (Medium). The attack vector is network-based (AV:N), requires low attack complexity (AC:L), needs low privileges (PR:L), requires no user interaction (UI:N), has unchanged scope (S:U), can result in high confidentiality impact (C:H), but has no impact on integrity (I:N) or availability (A:N) (NVD Database).

The vulnerability allows authenticated attackers with Contributor-level access or higher to append additional SQL queries to existing ones, potentially enabling the extraction of sensitive information from the database (NVD Database).

Users should update their Simple Signup Form plugin to a version newer than 1.6.5 when available. Until then, it is recommended to restrict access to the plugin's functionality to trusted users only (NVD Database).