---
id: CVE-2026-96876
title: >-
  Improper neutralization of input during web page generation ('cross-site
  scripting') vulnerability in Mediawiki - Cargo extension allows Reflected XSS.


  This issue affects Mediawiki - Cargo extension: through 3.9.4.
summary: >-
  Improper neutralization of input during web page generation ('cross-site
  scripting') vulnerability in Mediawiki - Cargo extension allows Reflected XSS.


  This issue affects Mediawiki - Cargo extension: through 3.9.4.
severity: medium
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N'
cwe:
  - CWE-79
vendor: The Wikimedia Foundation
product: Mediawiki - Cargo extension
affected:
  - mediawiki_-_cargo_extension <= 3.9.4
published: '2026-09-25'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T22:19:06.327'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96876'
references:
  - url: 'https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1328630'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T435121'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00339
epssPercentile: 0.27123
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-25T20:38:36.379087Z'
cvssSource: cna
ingestedAt: '2026-09-25T20:17:49.470Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/BomboBombone/CVE-2026-96876'
  checkedAt: '2026-10-27T19:24:41.150Z'
exploitAvailable: true
---

## Overview

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Mediawiki - Cargo extension allows Reflected XSS.

This issue affects Mediawiki - Cargo extension: through 3.9.4.

## Remediation

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