---
id: CVE-2026-96872
title: >-
  Improper handling of insufficient permissions or privileges vulnerability in
  The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and
  Windows allows Accessing Functionality Not Properly Constrained by ACLs.


  This is…
summary: >-
  Improper handling of insufficient permissions or privileges vulnerability in
  The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and
  Windows allows Accessing Functionality Not Properly Constrained by ACLs.


  This is…
severity: low
cvss: 2.9
cvssVector: 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/AU:Y'
cwe:
  - CWE-280
vendor: The Wikimedia Foundation
product: Mediawiki - WikiLambda Extension
affected:
  - mediawiki_-_wikilambda_extension < 1.47.0
published: '2026-09-23'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T20:17:27.473'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96872'
references:
  - url: 'https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1326392'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T435085'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T19:34:57.995525Z'
cvssSource: cna
ingestedAt: '2026-09-23T19:31:04.478Z'
---

## Overview

Improper handling of insufficient permissions or privileges vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and Windows allows Accessing Functionality Not Properly Constrained by ACLs.

This issue affects Mediawiki - WikiLambda Extension: before 1.47.0.

## Remediation

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