CVE-2026-54809: VillaTheme GIFT4U SQL Injection Flaw

CVE-2026-54809 Overview

CVE-2026-54809 is a blind SQL injection vulnerability in the VillaTheme GIFT4U WordPress plugin, also known as gift4u-gift-cards-all-in-one-for-woo. The flaw affects all plugin versions from initial release through 1.0.10. Improper neutralization of special elements in an SQL command allows unauthenticated attackers to inject arbitrary SQL through network requests. The vulnerability is categorized under CWE-89 and carries a scope change indicating impact beyond the vulnerable component.

Critical Impact
Unauthenticated attackers can extract sensitive database content, including WordPress user credentials and customer data from WooCommerce stores running GIFT4U through version 1.0.10.

Affected Products

VillaTheme GIFT4U WordPress plugin (gift4u-gift-cards-all-in-one-for-woo)
All versions from initial release through 1.0.10
WordPress sites integrating GIFT4U with WooCommerce gift card workflows

Discovery Timeline

2026-06-17 - CVE-2026-54809 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2026-54809

Vulnerability Analysis

The GIFT4U plugin extends WooCommerce with gift card functionality and accepts user-supplied parameters that flow into SQL queries without sufficient sanitization or parameterization. Because the injection is blind, attackers do not receive direct query output. They infer database content through boolean conditions, time delays, or error-based side channels.

The vulnerability requires no authentication and no user interaction. An attacker only needs network reachability to the WordPress site. Successful exploitation can disclose data stored in the WordPress wp_users, wp_usermeta, and WooCommerce order tables, including password hashes, session tokens, and customer personally identifiable information (PII).

Root Cause

The root cause is improper neutralization of special elements used in an SQL command [CWE-89]. The plugin concatenates request input directly into SQL statements rather than using the WordPress $wpdb->prepare() API with placeholders. Special characters such as single quotes, comments, and union operators pass through unescaped.

Attack Vector

Exploitation occurs over the network against the public WordPress site. An attacker submits crafted parameter values to a vulnerable GIFT4U endpoint, embedding boolean or time-based SQL payloads. The injected logic alters the underlying query, and the attacker iterates through payloads to enumerate database schema and exfiltrate records. The scope change in the CVSS vector reflects that the compromised query reaches data beyond the plugin's own component boundary.

No verified public proof-of-concept code is currently referenced. See the Patchstack WordPress Vulnerability Report for additional technical context.

Detection Methods for CVE-2026-54809

Indicators of Compromise

HTTP requests to GIFT4U plugin endpoints containing SQL meta-characters such as ', --, UNION SELECT, SLEEP(, or BENCHMARK(.
Unusual spikes in response latency on requests to wp-admin/admin-ajax.php or plugin REST routes, indicating time-based blind SQLi.
Repeated, near-identical requests with incrementing numeric or character values, characteristic of automated blind extraction tooling like sqlmap.
Database error entries or warnings in PHP logs originating from GIFT4U query handlers.

Detection Strategies

Inspect web server access logs for requests targeting GIFT4U routes with encoded SQL syntax (%27, %20OR%20, %23).
Deploy a web application firewall (WAF) rule set with WordPress and WooCommerce SQL injection signatures enabled in blocking mode.
Correlate database slow-query logs with web request timestamps to identify time-based injection attempts.

Monitoring Recommendations

Alert on unauthenticated requests to GIFT4U endpoints from a single source exceeding a defined request-per-minute threshold.
Monitor WordPress audit logs for unexpected reads from wp_users and wp_options tables originating from plugin context.
Track outbound connections from the web server to attacker-controlled hosts that could indicate post-exploitation data exfiltration.

How to Mitigate CVE-2026-54809

Immediate Actions Required

Disable or uninstall the GIFT4U plugin until a patched release is confirmed installed.
Apply WAF virtual-patching rules that block SQL injection payloads against GIFT4U request parameters.
Rotate WordPress administrator passwords, API keys, and WooCommerce payment gateway secrets if compromise is suspected.
Audit the wp_users table for unauthorized accounts and remove any unexpected administrator entries.

Patch Information

The vulnerability affects GIFT4U through version 1.0.10. Administrators should upgrade to the latest vendor release tracked in the Patchstack WordPress Vulnerability Report and verify the installed version exceeds 1.0.10.

Workarounds

Restrict access to GIFT4U plugin endpoints by IP allowlist at the reverse proxy or WAF layer.
Enforce the WordPress database user's least-privilege permissions to limit the impact of injected queries.
Enable Patchstack or an equivalent WordPress vulnerability protection service to receive automatic virtual patches.

bash

# Configuration example: Nginx rule to block common SQLi payloads against GIFT4U routes
location ~* /wp-content/plugins/gift4u-gift-cards-all-in-one-for-woo/ {
    if ($args ~* "(union.*select|sleep\(|benchmark\(|--|%27|0x[0-9a-f]+)") {
        return 403;
    }
}