CVE-2026-4304 Overview
CVE-2026-4304 is an unauthenticated SQL Injection vulnerability in the WeePie Cookie Allow plugin for WordPress. The flaw resides in the consent parameter, which is passed into a database query without sufficient escaping or query preparation. All plugin versions up to and including 3.4.11 are affected. Remote attackers can append additional SQL statements to existing queries to extract sensitive data from the WordPress database, including user credentials and session information. The vulnerability is classified as [CWE-89] Improper Neutralization of Special Elements used in an SQL Command.
Critical Impact
Unauthenticated attackers can extract sensitive database contents, including hashed credentials and personally identifiable information stored by WordPress.
Affected Products
- WeePie Cookie Allow plugin for WordPress, versions up to and including 3.4.11
- WordPress sites using the plugin for cookie consent management
- Any deployment exposing the plugin's consent parameter to network requests
Discovery Timeline
- 2026-05-05 - CVE-2026-4304 published to the National Vulnerability Database
- 2026-05-05 - Last updated in NVD database
Technical Details for CVE-2026-4304
Vulnerability Analysis
The WeePie Cookie Allow plugin processes a user-supplied consent parameter and incorporates the value into an SQL query without using parameterized statements or sufficient escaping. Because the plugin handles cookie consent acknowledgements, the affected endpoint is reachable by unauthenticated visitors. An attacker can craft request payloads that break out of the original query context and append arbitrary SQL clauses such as UNION SELECT statements.
Successful exploitation allows attackers to read data from any table accessible to the WordPress database user. Targets typically include the wp_users table, which stores password hashes and email addresses, and wp_options, which stores secret keys and configuration values. The vulnerability impacts confidentiality but does not directly allow modification of data or denial of service, consistent with the CVSS impact metrics.
Root Cause
The root cause is the absence of prepared statements when building the SQL query that consumes the consent parameter. WordPress provides the $wpdb->prepare() API specifically to bind parameters safely, but the affected code path concatenates the attacker-controlled value directly into the query string. Input validation and escaping routines such as esc_sql() are also not applied, leaving the parameter trusted on entry.
Attack Vector
The attack vector is network-based and requires no authentication or user interaction. An attacker sends an HTTP request to the plugin endpoint that processes the consent value, supplying SQL syntax as the parameter content. Because the request mimics a legitimate cookie-consent action, it blends with normal traffic and can be sent at scale. Exfiltration commonly uses union-based or boolean-based blind SQL injection techniques depending on whether the response reflects query results.
No verified public proof-of-concept code is available at the time of publication. Refer to the Wordfence Vulnerability Report for additional technical context.
Detection Methods for CVE-2026-4304
Indicators of Compromise
- HTTP requests to WordPress endpoints containing SQL keywords such as UNION, SELECT, SLEEP, or INFORMATION_SCHEMA within the consent parameter
- Unexpected outbound traffic from the web server following anomalous POST or GET requests targeting the WeePie Cookie Allow plugin
- Database error messages in PHP or web server logs referencing malformed SQL syntax originating from plugin code paths
- New or unexpected administrator accounts in wp_users following suspicious request activity
Detection Strategies
- Inspect web server access logs for requests where the consent parameter contains SQL metacharacters such as single quotes, comment markers (--, #), or boolean tautologies
- Deploy WAF signatures that flag SQL injection patterns specifically against WordPress plugin endpoints
- Correlate WordPress request logs with database query logs to identify unusually long or malformed statements tied to the plugin
Monitoring Recommendations
- Enable verbose query logging on MySQL or MariaDB and alert on queries referencing wp_users or wp_options from plugin contexts that should not access them
- Monitor for spikes in 500-level HTTP responses from plugin URLs, which often indicate failed injection attempts
- Track integrity of administrator accounts and secret key options, alerting on changes outside maintenance windows
How to Mitigate CVE-2026-4304
Immediate Actions Required
- Upgrade the WeePie Cookie Allow plugin to a version later than 3.4.11 once the vendor publishes a fixed release, per the Weepie Plugin Changelog
- Audit the WordPress database for unauthorized administrator accounts, modified options, and exfiltration indicators
- Rotate WordPress secret keys, administrator passwords, and any API tokens stored in the database
Patch Information
Review the vendor changelog at the Weepie Plugin Changelog and the CodeCanyon Plugin Overview for the latest available release. If no patched version is available, removal or replacement of the plugin is the recommended course of action.
Workarounds
- Disable and remove the WeePie Cookie Allow plugin until a patched version is released
- Block requests containing SQL metacharacters in the consent parameter at the WAF or reverse proxy layer
- Restrict the WordPress database user privileges so the plugin cannot read sensitive tables outside its scope
- Place the WordPress administrative interface behind IP allow-listing to reduce post-exploitation impact
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
