Is Read More & Accordion safe? Known vulnerabilities and latest version

The Read More & Accordion plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.5.7. This is due to the 'RadMoreAjax::importData' function not restricting which database tables can be written to during import and not properly validating the imported data. This makes it possible for authenticated attackers, with permission granted by the site owner through the plugin's role settings, to insert arbitrary rows into the 'wp_users' and 'wp_usermeta' tables, including the 'wp_capabilities' field, allowing them to create a new administrator account and gain administrator access to the site.

The Read More & Accordion plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'orderby' parameter in all versions up to, and including, 3.5.7. This is due to the use of esc_sql() without surrounding the value in quotes in an ORDER BY clause inside the getAllDataByLimit() and getAccordionAllDataByLimit() functions in ReadMoreData.php. The user-supplied $_GET['orderby'] value is only processed through esc_attr() (an HTML-escaping function) before being passed to these database functions, where esc_sql() is applied but the value is directly concatenated—unquoted—into the ORDER BY fragment of the SQL query before $wpdb->prepare() is called. Because esc_sql() only escapes quote characters and backslashes (which are irrelevant in an unquoted ORDER BY context), an attacker can inject arbitrary SQL expressions such as (SELECT SLEEP(5)) or conditional subqueries to perform time-based blind data extraction. This makes it possible for authenticated attackers with administrator-level access or above (or any role explicitly permitted access to the plugin's admin pages via the yrm-user-roles setting) to extract sensitive data from the database, including administrator credential hashes.

Missing Authorization vulnerability in edmon.parker Read More & Accordion expand-maker allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Read More & Accordion: from n/a through <= 3.5.5.1.

The Read More & Accordion plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.4.7. This is due to missing or incorrect nonce validation on the addNewButtons() function. This makes it possible for unauthenticated attackers to include and execute arbitrary PHP files via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The Read More & Accordion plugin for WordPress is vulnerable to unauthorized modification and loss of data due to a missing capability check on the expmDeleteData() function in all versions up to, and including, 3.4.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary 'read more' posts.

The Read More & Accordion WordPress plugin before 3.2.7 unserializes user input provided via the settings, which could allow high-privilege users such as admin to perform PHP Object Injection when a suitable gadget is present.