CVE-2026-92465 Overview
CVE-2026-92465 is a blind SQL injection vulnerability in the Themeum WP Mega Menu plugin for WordPress. The flaw affects all versions up to and including 1.4.2. It stems from improper neutralization of special elements in an SQL command [CWE-89], allowing an authenticated attacker with high privileges to inject arbitrary SQL statements. Successful exploitation impacts confidentiality of database contents and can affect service availability. The vulnerability is network-exploitable and requires no user interaction.
Critical Impact
Authenticated attackers can extract sensitive database contents from WordPress sites running vulnerable versions of the WP Mega Menu plugin through blind SQL injection techniques.
Affected Products
- Themeum WP Mega Menu plugin for WordPress
- All versions from unspecified initial release through 1.4.2
- WordPress sites with the vulnerable plugin installed and active
Discovery Timeline
- 2026-09-16 - CVE-2026-92465 published to NVD
- 2026-09-16 - Last updated in NVD database
Technical Details for CVE-2026-92465
Vulnerability Analysis
The WP Mega Menu plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries. This weakness enables blind SQL injection, where attackers infer database contents through boolean-based or time-based responses rather than direct output. Because the injection is blind, exploitation typically relies on conditional queries that produce observable differences in application behavior.
The issue is classified under CWE-89, Improper Neutralization of Special Elements used in an SQL Command. Exploitation requires an authenticated account with elevated privileges within WordPress, which limits the attacker population but does not eliminate risk from insider threats or compromised administrator credentials.
Root Cause
The root cause is the absence of parameterized queries or adequate input escaping in a plugin function that constructs SQL statements with user-controlled data. WordPress provides the $wpdb->prepare() API for safe query construction, but the vulnerable code paths bypass or misuse this protection. Refer to the Patchstack SQL Injection Vulnerability advisory for additional technical context.
Attack Vector
An authenticated attacker with high privileges submits crafted input containing SQL metacharacters to a vulnerable plugin endpoint. The unsanitized input is concatenated into a backend SQL query, altering its logic. The attacker then uses boolean conditions or timing side channels to enumerate database schema, extract user records, and read stored credentials or session tokens. The scope-changed nature of the flaw indicates that impact extends beyond the WP Mega Menu component to broader WordPress database contents.
No public proof-of-concept exploit is currently referenced in the advisory.
Detection Methods for CVE-2026-92465
Indicators of Compromise
- Unexpected SQL syntax, UNION SELECT, SLEEP(), or BENCHMARK() patterns in WordPress access logs targeting WP Mega Menu endpoints.
- Abnormally long response times on plugin AJAX or admin-ajax requests, suggesting time-based blind injection.
- Authenticated administrator sessions performing atypical query volume against wp-admin plugin routes.
Detection Strategies
- Deploy a Web Application Firewall (WAF) rule set that inspects requests to WP Mega Menu endpoints for SQL injection payloads.
- Enable WordPress query logging or SAVEQUERIES in development environments to identify unsafe query construction.
- Correlate authentication events with subsequent database anomalies to identify credential misuse.
Monitoring Recommendations
- Monitor for repeated failed or malformed requests to plugin URIs containing suspicious characters such as ', --, or encoded equivalents.
- Alert on privileged user activity outside expected maintenance windows.
- Review database audit logs for information_schema enumeration originating from the WordPress database user.
How to Mitigate CVE-2026-92465
Immediate Actions Required
- Identify all WordPress installations running Themeum WP Mega Menu version 1.4.2 or earlier.
- Restrict administrative access to trusted IP ranges and enforce multi-factor authentication for privileged accounts.
- Rotate credentials for any accounts that could have interacted with the vulnerable plugin.
Patch Information
At the time of publication, the advisory lists versions through 1.4.2 as affected. Administrators should consult the Patchstack advisory and the plugin vendor's release notes for the fixed version and apply the update as soon as it becomes available.
Workarounds
- Deactivate and remove the WP Mega Menu plugin until a patched release is installed.
- Deploy virtual patching through Patchstack or an equivalent WordPress WAF to block SQL injection payloads targeting the plugin.
- Apply the principle of least privilege to the WordPress database user, removing unnecessary permissions such as FILE or DROP.
# Configuration example: disable the vulnerable plugin via WP-CLI
wp plugin deactivate wp-megamenu
wp plugin delete wp-megamenu
# Verify no active installations remain
wp plugin list --status=active | grep -i megamenu
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
