CVE-2025-28953 – This SQL injection vulnerability in the smartSE... (How to Fix)

📋 TL;DR

This SQL injection vulnerability in the smartSEO WordPress theme allows attackers to execute arbitrary SQL commands on the database. It affects all smartSEO theme installations from unknown versions up to and including version 4.0. Attackers could potentially read, modify, or delete database content.

💻 Affected Systems

Products:

smartSEO WordPress theme

Versions: n/a through <= 4.0

Operating Systems: All

Default Config Vulnerable: ⚠️ Yes

Notes: Affects WordPress installations using the vulnerable smartSEO theme

📦 What is this software?

Smartseo by Axiomthemes

View all CVEs affecting Smartseo →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete database compromise leading to data theft, privilege escalation, website defacement, or complete site takeover

🟠

Likely Case

Data exfiltration including user credentials, sensitive content, and potential administrative access

🟢

If Mitigated

Limited impact with proper input validation and database permissions in place

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

SQL injection vulnerabilities are commonly exploited and weaponized quickly

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: >4.0

Vendor Advisory: https://patchstack.com/database/Wordpress/Theme/smartSEO/vulnerability/wordpress-smart-seo-4-0-sql-injection-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Update smartSEO theme to version >4.0 via WordPress admin panel
2. Verify update completed successfully
3. Clear any caching mechanisms

🔧 Temporary Workarounds

Disable smartSEO theme

all

Temporarily disable the vulnerable theme until patched

wp theme deactivate smartSEO

Web Application Firewall rules

all

Implement WAF rules to block SQL injection patterns

🧯 If You Can't Patch

Implement strict input validation and parameterized queries
Apply principle of least privilege to database user accounts

🔍 How to Verify

Check if Vulnerable:

Check WordPress theme version in Appearance > Themes or using wp theme list command

Check Version:

wp theme list --field=name,status,version | grep smartSEO

Verify Fix Applied:

Confirm smartSEO theme version is >4.0 and test SQL injection vectors

📡 Detection & Monitoring

Log Indicators:

Unusual database queries
SQL syntax errors in logs
Multiple failed login attempts

Network Indicators:

SQL keywords in HTTP requests
Unusual database connection patterns

SIEM Query:

source="web_logs" AND ("UNION" OR "SELECT" OR "INSERT" OR "UPDATE" OR "DELETE") AND uri="*smartSEO*"

📊 Metadata

CVE ID: CVE-2025-28953

CVSS v3 Score: 8.5 (HIGH)

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

CWE: CWE-89

EPSS Score: 0.04% exploit probability (11.3th percentile)

Published: November 6, 2025

Last Updated: January 21, 2026

🔗 References

https://patchstack.com/database/Wordpress/Theme/smartSEO/vulnerability/wordpress-smart-seo-4-0-sql-injection-vulnerability?_s_id=cve Third Party Advisory

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🔗 Related Vulnerabilities

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