---
id: CVE-2026-66570
title: >-
  WordPress WordPress File Upload plugin <= 5.2.1 - Cross Site Scripting (XSS)
  vulnerability
summary: >-
  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
  5.2.1.
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-79
vendor: Nickboss
product: wp-file-upload
affected:
  - wp-file-upload <= 5.2.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-01T17:22:21.161085Z'
published: '2026-11-01'
updated: '2026-11-01'
sourceUpdated: '2026-11-01T17:37:10.026Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-66570'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/wp-file-upload/vulnerability/wordpress-wordpress-file-upload-plugin-5-2-1-cross-site-scripting-xss-vulnerability?_s_id=cve
tags:
  - cve.org
epss: 0.00201
epssPercentile: 0.10073
ingestedAt: '2026-11-05T19:30:42.584Z'
---

## Overview

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 5.2.1.

## Affected

- `wp-file-upload <= 5.2.1`

## Remediation

Update the WordPress WordPress File Upload plugin to the latest available version (at least 5.2.2).