CVE-2024-51626: WooCommerce Quote Calculator SQLi Flaw

CVE-2024-51626 Overview

CVE-2024-51626 is a blind SQL injection vulnerability in the chenyenming WooCommerce Quote Calculator plugin (woo-quote-calculator-order) for WordPress. The flaw stems from improper neutralization of special elements in SQL commands [CWE-89]. It affects all plugin versions from initial release through version 1.1. An authenticated attacker with low privileges can exploit the network-accessible flaw to read, modify, or destroy database contents. The vulnerability was published to the National Vulnerability Database (NVD) on November 4, 2024.

Critical Impact
An authenticated attacker can execute arbitrary SQL statements against the WordPress database, exposing customer records, credentials, and order data on affected WooCommerce stores.

Affected Products

chenyenming WooCommerce Quote Calculator plugin (woo-quote-calculator-order)
All plugin versions up to and including 1.1
WordPress sites running WooCommerce with this plugin installed

Discovery Timeline

2024-11-04 - CVE-2024-51626 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-51626

Vulnerability Analysis

The WooCommerce Quote Calculator plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries. The vulnerability is classified as blind SQL injection, meaning attackers infer query results through response differences or timing rather than direct output. The attack is network-reachable and requires low-privilege authentication with no user interaction. Successful exploitation compromises confidentiality, integrity, and availability of the underlying database.

Root Cause

The root cause is improper neutralization of special elements used in SQL commands [CWE-89]. User-controlled parameters flow into database queries without prepared statements or parameterized inputs. WordPress provides the $wpdb->prepare() API for safe query construction, but the affected plugin does not consistently apply it before executing queries against the WordPress database.

Attack Vector

An authenticated attacker submits crafted SQL payloads through plugin input fields that are handled by the quote calculator functionality. Because the injection is blind, attackers rely on boolean-based or time-based techniques to extract data one bit at a time. Payloads include conditional expressions such as SLEEP() calls or nested SELECT statements to enumerate table names, column contents, and administrative credentials stored in the wp_users table.

No verified public proof-of-concept code is available at the time of publication. See the Patchstack WooCommerce Vulnerability Advisory for additional technical context.

Detection Methods for CVE-2024-51626

Indicators of Compromise

Web server access logs containing SQL syntax such as UNION SELECT, SLEEP(, BENCHMARK(, or encoded variants in requests to plugin endpoints under /wp-content/plugins/woo-quote-calculator-order/.
Unusually long request-processing times for POST requests to the quote calculator, indicative of time-based blind injection.
Database error entries in debug.log referencing the plugin's queries.
Unexpected authenticated sessions from low-privileged accounts sending repeated parametric variations to the same endpoint.

Detection Strategies

Deploy a WordPress-aware web application firewall (WAF) rule set to flag SQL metacharacters in parameters accepted by the plugin.
Correlate authentication logs with request patterns to identify subscriber-level accounts issuing SQL-shaped payloads.
Baseline normal query duration for the plugin's endpoints and alert on statistical outliers consistent with SLEEP-based inference.

Monitoring Recommendations

Forward WordPress, PHP, and MySQL logs to a centralized analytics platform for cross-source correlation.
Alert on sudden spikes in wp_users or wp_options read activity outside of administrative workflows.
Track new low-privileged user registrations followed by requests targeting plugin endpoints.

How to Mitigate CVE-2024-51626

Immediate Actions Required

Deactivate and remove the woo-quote-calculator-order plugin on all WordPress installations until a fixed release is confirmed.
Rotate all WordPress administrator, database, and API credentials on affected sites.
Audit the wp_users table for unauthorized accounts and remove any that cannot be verified.
Restrict new user registration and enforce multi-factor authentication for privileged roles.

Patch Information

No vendor patch is referenced in the NVD record at the time of publication. Administrators should monitor the Patchstack advisory for a fixed release beyond version 1.1 and apply it immediately upon availability.

Workarounds

Block requests to /wp-content/plugins/woo-quote-calculator-order/ at the WAF or reverse proxy layer until a patch is applied.
Apply virtual patching rules that reject SQL metacharacters in POST parameters processed by the plugin.
Restrict database user privileges so the WordPress application account cannot execute DROP, ALTER, or FILE operations.
Enable database query logging and set alerting thresholds on anomalous query volume from the WordPress host.

bash

# Example WAF rule (ModSecurity) blocking SQL metacharacters on the plugin path
SecRule REQUEST_URI "@beginsWith /wp-content/plugins/woo-quote-calculator-order/" \
  "phase:2,chain,deny,status:403,id:1005162601,\
   msg:'Potential CVE-2024-51626 SQLi attempt'"
  SecRule ARGS "@rx (?i)(union\s+select|sleep\s*\(|benchmark\s*\(|--\s|;--|/\*)" "t:none,t:urlDecodeUni"