Atomic Edge analysis of CVE-2026-42647 (metadata-based):
This vulnerability is an unauthenticated SQL Injection in the JoomSport – for Sports: Team & League, Football, Hockey & more plugin for WordPress, affecting versions up to and including 5.7.7. The plugin fails to escape user-supplied parameters and does not prepare SQL queries properly, allowing unauthenticated attackers to append malicious SQL into existing queries. With a CVSS score of 7.5 (High), the confidentiality impact is complete, though there is no impact on integrity or availability.
Root Cause: Based on the CWE-89 classification and the vulnerability description, the root cause is a lack of input sanitization and parameterized queries in the plugin’s database interaction code. The description explicitly states “insufficient escaping on the user supplied parameter” and “lack of sufficient preparation on the existing SQL query.” This likely occurs in a function that constructs SQL queries using direct string concatenation or interpolation with user-controlled data, such as `$_GET` or `$_POST` parameters, without first using `$wpdb->prepare()` or proper `esc_sql()` calls. Atomic Edge analysis infers that the vulnerable code is in a shortcode handler, AJAX endpoint, or template function that processes user input for filtering, sorting, or searching sports data. The absence of authentication requirements and nonce checks (common in many WordPress plugin AJAX handlers) further enables unauthenticated exploitation. Without source code access, these conclusions remain inferred but are strongly supported by the CWE and description.
Exploitation: The attack vector is network-based via HTTP requests to the WordPress site. Unauthenticated attackers can send specially crafted requests containing SQL injection payloads in a vulnerable parameter exposed through one or more of the plugin’s public endpoints. Common entry points for a sports management plugin include AJAX actions for loading match results, player statistics, league tables, or search functionality. Based on this plugin’s typical features, an attacker would likely target an AJAX endpoint at `/wp-admin/admin-ajax.php` with an action parameter like `joomsport_get_results` or a similar handler, passing a parameter such as `league_id`, `team_id`, `player_id`, or `search_term` with a SQL injection payload. The attack does not require authentication (CVSS PR:N) or user interaction (CVSS UI:N). A payload like `1 UNION SELECT user_login, user_pass FROM wp_users` appended to an integer parameter would extract administrator credentials from the database.
Remediation: The fix must address the SQL injection by ensuring all user-supplied parameters are properly escaped and that SQL queries use prepared statements via `$wpdb->prepare()`. The plugin should replace any direct query concatenation with parameterized placeholders (`%d`, `%s`, `%f`) and validate input types before inclusion. Additionally, all AJAX handlers and shortcodes should implement capability checks and nonce verification to prevent unauthenticated access, even if the fix for this specific CVE focuses on the SQL injection itself. The patched version 5.7.8 likely implements these changes in the vulnerable function(s). Developers should audit all query-building functions that interact with user input across the plugin.
Impact: Successful exploitation allows an unauthenticated attacker to execute arbitrary SQL commands against the WordPress database. This can lead to complete compromise of the site’s data confidentiality: attackers can extract sensitive information from the database, including user credentials (hashed passwords), user email addresses, session tokens, API keys, and any custom data stored by the plugin (e.g., player personal information, internal team data). With administrator credentials, an attacker could escalate to full site takeover, install malicious plugins, modify content, or use the site as a pivot for further attacks. The CVSS vector indicates no impact on integrity or availability, but the confidentiality impact is critical.
