What the vulnerability does
01Description
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in axiomthemes Harper harper allows PHP Local File Inclusion.This issue affects Harper: from n/a through <= 1.13.
Explanation of Vulnerability in Simple Terms
02Summary
Harper versions 1.13 and earlier contain a vulnerability that allows an attacker to read sensitive data, modify site content, or disrupt service availability. The attack requires network access and high technical complexity but no authentication or user interaction. The vulnerability affects the core product functionality and could compromise site integrity and confidentiality.
What an attacker can do
03Attacker Capabilities
Read sensitive data, modify site content, or cause the site to become unavailable.
Potential impact on your site
04Site Impact
Potential data breach, unauthorized content changes, or service disruption depending on attacker's objectives.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication required, but attack requires high technical complexity.
Key dates
06Disclosure timeline
December 18, 2025
CVE published
April 28, 2026
Record updated