CVE-2026-57765 Overview
CVE-2026-57765 is a SQL Injection vulnerability affecting the WP EasyCart WordPress plugin in versions up to and including 5.9.0. The flaw allows authenticated users with Contributor-level privileges to inject arbitrary SQL statements into database queries processed by the plugin. Successful exploitation enables attackers to read sensitive database content, alter query logic, and impact WordPress site availability. The vulnerability is tracked under CWE-89: Improper Neutralization of Special Elements used in an SQL Command.
Critical Impact
Authenticated Contributor accounts can execute injected SQL queries against the WordPress database, leading to confidentiality loss and partial availability impact on affected sites.
Affected Products
- WP EasyCart WordPress plugin versions <= 5.9.0
- WordPress installations with WP EasyCart enabled
- Sites permitting Contributor-level user registration or delegation
Discovery Timeline
- 2026-07-02 - CVE-2026-57765 published to NVD
- 2026-07-02 - Last updated in NVD database
Technical Details for CVE-2026-57765
Vulnerability Analysis
The vulnerability originates in the WP EasyCart plugin's handling of user-supplied input within SQL statements. The plugin fails to properly neutralize special characters before including request parameters in database queries. Attackers holding a Contributor role can craft requests that break out of the intended query context and append attacker-controlled SQL.
Because the scope is changed (S:C in the CVSS vector), the injected SQL can affect resources beyond the vulnerable component itself, including data stored in shared WordPress tables. Confidentiality impact is high while integrity is unaffected, indicating the primary risk is data disclosure rather than record tampering. The Patchstack advisory categorizes the issue as a Contributor-level SQL Injection targeting the plugin's request handlers.
Root Cause
The root cause is missing or insufficient parameterization of user input passed to WordPress database APIs. Developer code likely concatenates request data directly into query strings instead of using $wpdb->prepare() with placeholders. This pattern violates the WordPress secure coding guidance for database access and produces the [CWE-89] condition.
Attack Vector
Exploitation requires network access to the target WordPress site and valid Contributor credentials. Contributors are low-privileged users typically able to submit draft posts, so this role is often granted broadly on multi-author sites. Once authenticated, the attacker sends crafted parameters to a vulnerable plugin endpoint, triggering the injection.
No verified public proof-of-concept code has been published. Refer to the Patchstack WordPress Vulnerability Report for the technical writeup.
Detection Methods for CVE-2026-57765
Indicators of Compromise
- Unexpected SQL syntax fragments such as UNION SELECT, SLEEP(, or information_schema in WordPress access logs.
- Requests to WP EasyCart plugin endpoints originating from Contributor-level session cookies.
- Anomalous database error messages surfaced through debug.log or PHP error output.
- Spikes in query duration or CPU consumption on the MySQL/MariaDB backend.
Detection Strategies
- Enable WordPress query logging and inspect statements referencing WP EasyCart tables for unbalanced quotes or injected clauses.
- Deploy a web application firewall rule set that flags SQL metacharacters in requests to /wp-admin/admin-ajax.php and plugin-specific paths.
- Correlate authenticated Contributor sessions with database anomalies to identify low-privilege abuse.
Monitoring Recommendations
- Alert on new or existing Contributor accounts issuing requests to WP EasyCart endpoints outside normal editorial workflows.
- Monitor for outbound data transfers following authenticated Contributor activity, indicating potential data exfiltration.
- Track plugin version inventory across WordPress fleets to detect installations still running 5.9.0 or earlier.
How to Mitigate CVE-2026-57765
Immediate Actions Required
- Update WP EasyCart to a version later than 5.9.0 as soon as the vendor releases a fixed build.
- Audit all Contributor-level accounts and revoke access for users who do not require posting privileges.
- Rotate WordPress administrator credentials and database passwords if compromise is suspected.
Patch Information
A vendor patch reference is tracked in the Patchstack WordPress Vulnerability Report. Site operators should apply the latest WP EasyCart release addressing this issue and verify plugin integrity after upgrade.
Workarounds
- Restrict Contributor role assignments and disable open user registration where feasible.
- Deploy virtual patching through a WAF such as Patchstack, Wordfence, or an equivalent to block SQL injection payloads targeting WP EasyCart endpoints.
- Place the WP EasyCart plugin behind IP allowlisting on administrative paths until the patch is applied.
# Configuration example: temporarily disable WP EasyCart via WP-CLI until patched
wp plugin deactivate wp-easycart
wp plugin status wp-easycart
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
