Atomic Edge analysis of CVE-2026-59526 (metadata-based):
MapSVG versions up to and including 8.14.0 contain an unauthenticated SQL injection vulnerability. The plugin fails to escape a user-supplied parameter and lacks prepared statements in an existing SQL query. This allows an unauthenticated attacker to append additional SQL queries to the original query and extract sensitive data from the WordPress database. The CVSS score is 7.5 (High) with a vector of AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, indicating no authentication or user interaction is required.
Root Cause:
The vulnerability stems from improper neutralization of special elements used in an SQL command (CWE-89). The plugin constructs a database query using a user-controlled parameter that is neither properly escaped nor included via a prepared statement. Since the description specifically states “insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query,” it is confirmed that the plugin concatenates the unsanitized input into an SQL string. Atomic Edge research infers that the affected code is likely in a database query builder method that directly interpolates request data, such as a filter or parameter used in a query for map data, rather than a direct SQL execution with a cleanly parameterized query. Without the source code, the exact parameter name and query context are inferred from the plugin’s functionality and the CWE classification, not confirmed from code review.
Exploitation:
An attacker can exploit this without authentication by sending a crafted HTTP request to a vulnerable endpoint. MapSVG likely exposes an AJAX action or REST endpoint that accepts a parameter used in a database query. A typical request would target an endpoint such as /wp-admin/admin-ajax.php with an action parameter like ‘mapsvg_ajax_get_map’ or a REST route under ‘/mapsvg/v1/’. The injection point is a parameter that is directly used in a SQL WHERE or ORDER BY clause. The attacker would append SQL injection payloads, such as a UNION-based extraction or a boolean-based blind injection, to retrieve sensitive data. For example, sending a value like ‘1 UNION SELECT user_login,user_pass FROM wp_users–‘ could retrieve usernames and password hashes. Since the vulnerability is unauthenticated, the attacker can repeatedly query the endpoint to enumerate database contents. The exact parameter name is not confirmed from the available metadata, but the attack vector is clear: a remote, unauthenticated attacker sends a crafted request with malicious SQL in a vulnerable parameter.
Remediation:
The fix requires the plugin to use prepared statements with bound parameters for all database queries. Specifically, the vulnerable SQL query should be rewritten to use $wpdb->prepare() with placeholders instead of concatenating user input directly. Additionally, the plugin should validate and sanitize user-supplied parameters before using them in any database query. The patched version 8.14.1 addresses this by ensuring proper escaping and preparation. Site administrators should update the plugin to version 8.14.1 or later immediately. If immediate update is not possible, applying a virtual patch that blocks requests with suspicious SQL injection patterns in the affected parameters provides temporary mitigation.
Impact:
Successful exploitation allows unauthenticated attackers to execute arbitrary SQL queries against the WordPress database. This can lead to the extraction of sensitive information, including usernames, password hashes, email addresses, and other user data. In some configurations, an attacker might also be able to modify or delete data, though the CVSS vector indicates a confidentiality impact only (C:H/I:N/A:N). The extracted password hashes could be cracked offline or used in further attacks, potentially leading to administrator account compromise. The vulnerability does not directly allow remote code execution, but combined with other vulnerabilities or weak credentials, it could lead to full site compromise.
