CVE-2026-22503
Received Received - Intake
Local File Inclusion Vulnerability in ThemeREX Nelson

Publication date: 2026-03-25

Last updated on: 2026-04-23

Assigner: Patchstack

Description
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in ThemeREX Nelson nelson allows PHP Local File Inclusion.This issue affects Nelson: from n/a through <= 1.2.0.
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Meta Information
Published
2026-03-25
Last Modified
2026-04-23
Generated
2026-06-16
AI Q&A
2026-03-25
EPSS Evaluated
2026-06-15
NVD
CVE-2026-22503
EUVD
EUVD-2026-15511
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
themerex nelson to 1.2.0 (inc)
themerex nelson From 1.0 (inc) to 1.2.0 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-98 The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or similar functions.
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Executive Summary

This vulnerability is an improper control of filename for include/require statements in the PHP program ThemeREX Nelson. It is a PHP Local File Inclusion (LFI) vulnerability, which means that the software allows an attacker to include files on the server through the PHP include or require functions improperly.

Impact Analysis

This vulnerability can allow an attacker to include and execute arbitrary files on the server, potentially leading to unauthorized access to sensitive information, code execution, or other malicious activities depending on the server environment and file permissions.

Compliance Impact

CVE-2026-22503 is a Local File Inclusion vulnerability that allows attackers to include and display local files from the target website, potentially exposing sensitive information such as database credentials.

Exposure of sensitive data due to this vulnerability could lead to violations of data protection regulations like GDPR and HIPAA, which require the protection of personal and sensitive information.

Therefore, exploitation of this vulnerability may compromise compliance with these standards by risking unauthorized access to confidential data.

Mitigation Strategies

CVE-2026-22503 is a high-priority Local File Inclusion vulnerability affecting the WordPress Nelson Theme versions up to and including 1.2.0.

No official patch is currently available for this vulnerability.

Patchstack has issued a mitigation rule that can be applied to block attacks until an official patch is released and tested.

Users are advised to update the affected theme if possible or seek assistance from their hosting provider or web developer to implement mitigations.

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