Registrations for the Events Calendar – Event Registration Plugin: SQL injection
Registrations for the Events Calendar – Event Registration Plugin is affected by SQL injection. Exploitation requires at least contributor-level access. A successful request can alter database queries and expose or modify WordPress data. The published affected range is <= 3.2.
- Component
- Registrations for the Events Calendar – Event Registration Plugin
- Plugin slug
registrations-for-the-events-calendar- Affected
- <= 3.2
- Safe version
> 3.2- Published
- Jul 23, 2026
This CVE was published Jul 23, 2026 and is one of 8 known issues for this plugin.
Update, patch or deactivate.
Update Registrations for the Events Calendar – Event Registration Plugin to a release after 3.2, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Registrations For The Events Calendar plugin for WordPress is vulnerable to SQL Injection via JSON keys in the 'standard' parameter handled by the rtec_records_edit AJAX action in versions up to and including 3.2. The handler decodes attacker-controlled JSON from $_POST['standard'] and uses the JSON array keys directly as column identifiers in the SET clause of an UPDATE statement built inside RTEC_Db_Admin::update_entry(). Only esc_sql() (mysqli_real_escape_string) is applied to the identifier; that function escapes quotes, backslashes, and a few control characters but does not escape spaces, equals signs, parentheses, or hyphens, so an attacker can break out of the identifier context and inject subqueries (terminated with a SQL comment). This makes it possible for authenticated attackers, with Contributor-level access and above who can edit the targeted event, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N