---
id: CVE-2026-103046
title: >-
  Improper neutralization of input during web page generation ('cross-site
  scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda
  extension allows Stored XSS.


  This issue affects MediaWiki - WikiLambda extension: before 1…
summary: >-
  Improper neutralization of input during web page generation ('cross-site
  scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda
  extension allows Stored XSS.


  This issue affects MediaWiki - WikiLambda extension: before 1…
severity: none
cwe:
  - CWE-79
vendor: The Wikimedia Foundation
product: Mediawiki - WikiLambda Extension
affected:
  - mediawiki_-_wikilambda_extension < 1.46.1
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T23:17:22.450'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103046'
references:
  - url: 'https://gerrit.wikimedia.org/r/c/1307827'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T428829'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T22:51:53.142Z'
---

## Overview

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS.

This issue affects MediaWiki - WikiLambda extension: before 1.46.1.

## Remediation

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