CVE-2025-14477 – The 404 Solution WordPress plugin contains a SQ... (How to Fix)

Q: What is the severity of CVE-2025-14477?

CVE-2025-14477 has a CVSS score of 4.9 (MEDIUM). The 404 Solution WordPress plugin contains a SQL injection vulnerability that allows authenticated attackers with administrator privileges to extract sensitive database information via time-based blind SQL injection. This affects all versions up to and including 3.1.0. Attackers can bypass sanitization by using specific character sequences in the filterText parameter.

📋 TL;DR

The 404 Solution WordPress plugin contains a SQL injection vulnerability that allows authenticated attackers with administrator privileges to extract sensitive database information via time-based blind SQL injection. This affects all versions up to and including 3.1.0. Attackers can bypass sanitization by using specific character sequences in the filterText parameter.

💻 Affected Systems

Products:

404 Solution WordPress Plugin

Versions: All versions up to and including 3.1.0

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Requires attacker to have administrator-level WordPress access. Vulnerability exists in default plugin configuration.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete database compromise including sensitive user data, credentials, and WordPress configuration information leading to site takeover.

🟠

Likely Case

Extraction of sensitive information from the database such as user credentials, personal data, or plugin-specific configuration.

🟢

If Mitigated

Limited impact due to proper access controls and monitoring preventing successful exploitation.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires administrator credentials and uses time-based blind SQL injection technique.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Versions after 3.1.0

Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3417333%40404-solution&new=3417333%40404-solution&sfp_email=&sfph_mail=

Restart Required: No

Instructions:

1. Update 404 Solution plugin to latest version via WordPress admin panel. 2. Verify plugin version is greater than 3.1.0. 3. Test plugin functionality after update.

🔧 Temporary Workarounds

Disable vulnerable AJAX endpoint

all

Remove or restrict access to the vulnerable ajaxUpdatePaginationLinks AJAX action

Add to theme functions.php or custom plugin: remove_action('wp_ajax_ajaxUpdatePaginationLinks', 'function_name');

Input validation filter

all

Add custom input validation for filterText parameter before plugin processes it

Add filter in functions.php: add_filter('pre_404solution_filtertext', function($text) { return preg_replace('/[\*\$\/]/', '', $text); });

🧯 If You Can't Patch

Disable or remove the 404 Solution plugin entirely
Implement strict access controls and monitoring for administrator accounts

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel for 404 Solution plugin version. If version is 3.1.0 or lower, system is vulnerable.

Check Version:

wp plugin get 404-solution --field=version (if WP-CLI installed) or check WordPress admin plugins page

Verify Fix Applied:

Verify plugin version is greater than 3.1.0 and test the pagination functionality works without errors.

📡 Detection & Monitoring

Log Indicators:

Unusual SQL queries in WordPress debug logs
Multiple failed login attempts followed by successful admin login
AJAX requests to admin-ajax.php with filterText parameter containing special characters

Network Indicators:

Unusual database query patterns from WordPress server
Increased response times for admin-ajax.php requests

SIEM Query:

source="wordpress.log" AND "admin-ajax.php" AND "filterText" AND ("*$/" OR "*/")

📊 Metadata

CVE ID: CVE-2025-14477

CVSS v3 Score: 4.9 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CWE: CWE-89

EPSS Score: 0.04% exploit probability (11.6th percentile)

Published: December 13, 2025

Last Updated: December 15, 2025

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