CVE-2024-47304: Fluent Support SQL Injection Vulnerability

CVE-2024-47304 Overview

CVE-2024-47304 is an SQL Injection vulnerability in the Fluent Support plugin for WordPress developed by Shahjahan Jewel. The flaw affects all versions up to and including 1.8.0 and stems from improper neutralization of special elements in SQL commands [CWE-89]. An authenticated attacker with low privileges can inject arbitrary SQL statements through vulnerable plugin parameters. The vulnerability carries a CVSS 3.1 base score of 8.5 and has a scope-changed impact, meaning exploitation can affect resources beyond the vulnerable component. The issue is tracked under CWE-89: Improper Neutralization of Special Elements used in an SQL Command.

Critical Impact
Authenticated attackers can extract sensitive database contents, including WordPress user credentials and customer support ticket data, from affected sites running Fluent Support <= 1.8.0.

Affected Products

Shahjahan Jewel Fluent Support WordPress plugin
All versions from n/a through 1.8.0
WordPress sites running the fluent-support plugin

Discovery Timeline

2024-10-17 - CVE-2024-47304 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-47304

Vulnerability Analysis

The Fluent Support plugin fails to properly sanitize or parameterize user-supplied input before incorporating it into SQL queries. This allows an attacker with authenticated access to inject SQL syntax that alters the query's logic. Because the CVSS scope is changed, a successful attack can reach data belonging to other security authorities, such as the WordPress core database tables containing user credentials and session tokens. Confidentiality impact is rated high, while availability impact is limited to low disruption of database operations.

Root Cause

The vulnerability is a classic input validation failure [CWE-89]. Plugin code paths accept parameters from authenticated requests and concatenate them directly into SQL statements rather than using prepared statements or the WordPress $wpdb->prepare() API. Missing type casting and missing escape routines on user-controlled values allow SQL metacharacters to break out of the intended query context.

Attack Vector

Exploitation requires network access to the WordPress site and low-privilege authentication, such as a subscriber or support agent account. The attacker submits crafted input through plugin endpoints handling support tickets or related data. No user interaction is required. The injected payload executes with the privileges of the WordPress database user, typically granting full read access across all plugin and core tables. See the Patchstack advisory for additional context.

Detection Methods for CVE-2024-47304

Indicators of Compromise

Unusual outbound HTTP requests originating from the web server following authenticated POST or GET requests to Fluent Support endpoints.
Web server access logs containing SQL metacharacters such as UNION SELECT, SLEEP(, --, or information_schema in parameters directed at /wp-admin/admin-ajax.php or plugin routes.
Unexpected database errors in PHP error logs referencing the fluent-support plugin.
New or modified WordPress administrator accounts appearing without a corresponding legitimate provisioning event.

Detection Strategies

Deploy a web application firewall (WAF) rule set that identifies SQL injection patterns targeting WordPress plugin endpoints.
Enable WordPress database query logging in staging environments to baseline normal Fluent Support query patterns, then alert on deviations.
Correlate authenticated low-privilege sessions with access to Fluent Support routes and flag high request volume or error-response spikes.

Monitoring Recommendations

Forward WordPress, PHP-FPM, and web server logs to a centralized SIEM for retention and correlation.
Monitor MySQL or MariaDB slow query and error logs for malformed statements referencing plugin tables prefixed with fs_.
Track file integrity of the wp-content/plugins/fluent-support/ directory to identify tampering.

How to Mitigate CVE-2024-47304

Immediate Actions Required

Update Fluent Support to a version later than 1.8.0 as soon as the vendor publishes a fixed release.
Audit WordPress user accounts and remove unused low-privilege accounts that could be leveraged for authenticated exploitation.
Rotate WordPress administrator passwords and secret keys defined in wp-config.php if compromise is suspected.
Review recent support ticket activity and database access logs for signs of exploitation.

Patch Information

Refer to the Patchstack advisory for Fluent Support for vendor patch status. Users must upgrade past version 1.8.0 once the maintainer publishes the security release. Verify plugin integrity after upgrading by comparing installed files against the official WordPress plugin repository package.

Workarounds

Deactivate and remove the Fluent Support plugin until a fixed version is installed if the plugin is not business-critical.
Restrict access to WordPress registration and low-privilege role assignment to reduce the population of accounts that meet the authentication precondition.
Deploy virtual patching through a WAF with rules blocking SQL injection payloads on Fluent Support request paths.
Enforce least-privilege on the WordPress database account so it cannot read tables outside its required scope.

bash

# Example WAF rule concept (ModSecurity) to block SQLi patterns on plugin routes
SecRule REQUEST_URI "@contains /wp-admin/admin-ajax.php" \
  "chain,phase:2,deny,status:403,id:1004730401,msg:'Possible SQLi against fluent-support'"
  SecRule ARGS "@rx (?i)(union(\s|/\*.*\*/)+select|information_schema|sleep\s*\(|benchmark\s*\()" "t:none,t:urlDecodeUni"