CVE-2026-57702 Overview
CVE-2026-57702 is a blind SQL injection vulnerability in the Amelia booking plugin developed by Melograno Venture Studio for WordPress. The flaw affects all versions of Amelia up to and including 2.4.2. Attackers can exploit the issue remotely over the network without authentication or user interaction. The vulnerability maps to CWE-89, Improper Neutralization of Special Elements used in an SQL Command. Because the scope changes on successful exploitation, impact extends beyond the vulnerable component to other resources managed by the database.
Critical Impact
Unauthenticated attackers can inject SQL statements to read confidential booking, customer, and WordPress administrative data from the database.
Affected Products
- Melograno Venture Studio Amelia (ameliabooking) WordPress plugin
- All versions from unspecified initial release through 2.4.2
- WordPress sites using the Amelia appointment booking plugin
Discovery Timeline
- 2026-07-13 - CVE-2026-57702 published to NVD
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-57702
Vulnerability Analysis
The Amelia plugin fails to properly neutralize special characters before passing user-controlled input into SQL statements. An attacker submits crafted parameters to a plugin endpoint, and the backend concatenates or interpolates the data into a query without safe parameterization. The database then executes attacker-controlled SQL fragments alongside the intended query.
Because the injection is blind, the response body does not directly return query results. Attackers infer data by observing conditional behavior, such as boolean-based response differences or time-delayed responses using functions like SLEEP(). This technique allows byte-by-byte extraction of sensitive tables, including wp_users password hashes and Amelia's customer and appointment records.
The vulnerability requires no authentication and no user interaction. The scope change indicator in the CVSS vector reflects that a successful attack can access data belonging to the broader WordPress site, not only the plugin's own data.
Root Cause
The root cause is missing or inadequate input sanitization on one or more request parameters processed by the Amelia plugin. Developer code paths build SQL queries through string concatenation instead of using prepared statements with the WordPress $wpdb->prepare() API. The fix requires binding parameters or strictly type-casting numeric identifiers before query execution.
Attack Vector
An attacker sends HTTP requests to a vulnerable Amelia endpoint on a WordPress site exposed to the internet. Crafted parameters carry SQL payloads such as boolean predicates or time-based conditionals. The attacker automates extraction with tools like sqlmap targeting the blind injection point. Refer to the Patchstack WordPress Vulnerability Report for advisory details.
Detection Methods for CVE-2026-57702
Indicators of Compromise
- HTTP requests to Amelia plugin endpoints containing SQL keywords such as UNION, SELECT, SLEEP(, BENCHMARK(, or AND 1=1.
- Unusually long server response times to /wp-admin/admin-ajax.php or Amelia REST routes indicating time-based blind injection.
- Repeated requests from a single source with incrementing character values consistent with byte-by-byte data extraction.
- Unexpected reads from the wp_users or wp_amelia_* tables in database query logs.
Detection Strategies
- Deploy web application firewall rules that detect SQL syntax in query parameters and POST bodies targeting ameliabooking routes.
- Enable MySQL general or slow query logging and alert on queries that reference sensitive tables from Amelia request contexts.
- Baseline normal response times for booking endpoints and flag statistically significant delays.
Monitoring Recommendations
- Correlate WordPress access logs with database audit logs to identify request-to-query mappings during suspected exploitation.
- Monitor for outbound traffic from the web host that could indicate data exfiltration following extraction.
- Track file integrity of WordPress core and plugin directories to detect post-exploitation persistence.
How to Mitigate CVE-2026-57702
Immediate Actions Required
- Update the Amelia plugin to a version later than 2.4.2 as soon as the vendor releases a patched build.
- Restrict access to Amelia endpoints behind a WAF or IP allowlist until patching is complete.
- Rotate WordPress administrator passwords and API keys if exploitation is suspected.
- Review database contents for unauthorized reads of customer and authentication tables.
Patch Information
Consult the Patchstack advisory for the fixed version and vendor guidance. Apply the update through the WordPress plugin management interface or via WP-CLI.
Workarounds
- Deploy WAF signatures that block SQL metacharacters in requests to Amelia routes when patching cannot be applied immediately.
- Disable the Amelia plugin on production sites until a fixed release is installed.
- Enforce least-privilege database credentials for the WordPress database user to limit read scope.
# Update the Amelia plugin using WP-CLI once a fixed version is available
wp plugin update ameliabooking --version=<fixed_version>
wp plugin list --name=ameliabooking --fields=name,status,version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
