---
id: CVE-2025-62663
title: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki -
  UploadWizard Extension allows Stored XSS.This issue affects Mediawiki -
  UploadWizard Extens…
summary: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki -
  UploadWizard Extension allows Stored XSS.This issue affects Mediawiki -
  UploadWizard Extens…
severity: none
cwe:
  - CWE-79
published: '2025-10-18'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T10:10:00.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-62663'
references:
  - url: 'https://gerrit.wikimedia.org/r/q/I37ea7c8825e9de776e207b3919b451ba2b905369'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T402095'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T402095'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00449
epssPercentile: 0.36978
ingestedAt: '2026-10-09T12:53:29.120Z'
---

## Overview

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - UploadWizard Extension allows Stored XSS.This issue affects Mediawiki - UploadWizard Extension: from master before 1.39.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.