CVE-2026-125822
Deferred Deferred - Pending Action

Stored XSS in WordPress File Upload Plugin

Publication date: 2026-11-15

Last updated on: 2026-11-15

Assigner: Patchstack

Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nickboss WordPress File Upload wp-file-upload allows Stored XSS.This issue affects WordPress File Upload: from n/a through 5.2.3.

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Meta Information

Published
2026-11-15
Last Modified
2026-11-15
Generated
2026-11-15
AI Q&A
2026-11-15
EPSS Evaluated
N/A
NVD
CVE-2026-125822
EUVD
EUVD-2026-126106

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
nickboss wp-file-upload to 5.2.3 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the Nickboss WordPress File Upload plugin (wp-file-upload). It allows attackers to inject malicious scripts into web pages that are then stored and served to other users. The flaw exists due to improper neutralization of user input during web page generation.

Detection Guidance

To detect this vulnerability, inspect WordPress sites using the wp-file-upload plugin version 5.2.3 or earlier. Check for unusual JavaScript execution in user inputs or file uploads. Review server logs for suspicious activity related to stored XSS attempts.

Impact Analysis

An attacker could exploit this to steal user session cookies, redirect users to malicious sites, or perform actions on behalf of users. It may lead to unauthorized access to sensitive data, defacement of web pages, or installation of malware on visitor devices.

Compliance Impact

This vulnerability could violate GDPR by exposing user data to unauthorized parties or failing to protect personal data. For HIPAA, it may compromise protected health information if exploited in healthcare-related WordPress sites. Both standards require adequate security measures to prevent unauthorized access.

Mitigation Strategies

Immediately update the wp-file-upload plugin to the latest version beyond 5.2.3. Disable the plugin if no update is available. Implement input validation and output encoding in WordPress configurations. Monitor for signs of exploitation in server logs.

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