CVE-2026-28117 HIGH

CVE-2026-28117: WordPress smart SEO theme <= 2.9 - Local File Inclusion vulnerability

Vendor Axiomthemes
Product smart SEO
Weakness CWE-98 · PHP file inclusion
Published March 5, 2026
Last update April 28, 2026

CVSS base score

8.1/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in axiomthemes smart SEO smartSEO allows PHP Local File Inclusion.This issue affects smart SEO: from n/a through <= 2.9.

Explanation of Vulnerability in Simple Terms

02Summary

Smart SEO versions 2.9 and earlier contain a code injection vulnerability that allows unauthenticated attackers to execute arbitrary code on affected sites. The vulnerability requires specific conditions to exploit but can lead to complete site compromise. No patch is currently available; administrators should contact the vendor for updates or consider disabling the plugin.

What an attacker can do

03Attacker Capabilities

Run their own code on the site without authentication.

Potential impact on your site

04Site Impact

Complete compromise of the site, including data theft, malware injection, and loss of availability.

Conditions required to exploit

05Prerequisites

Network access to the site; specific attack conditions must be met (high complexity).

Key dates

06Disclosure timeline

March 5, 2026 CVE published
April 28, 2026 Record updated