---
id: CVE-2025-62661
title: >-
  Incorrect Default Permissions vulnerability in The Wikimedia Foundation
  Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows
  Accessing Functionality Not Properly Constrained by ACLs.This issue affects
  Mediawiki -…
summary: >-
  Incorrect Default Permissions vulnerability in The Wikimedia Foundation
  Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows
  Accessing Functionality Not Properly Constrained by ACLs.This issue affects
  Mediawiki -…
severity: none
cwe:
  - CWE-276
published: '2025-10-21'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-62661'
references:
  - url: 'https://gerrit.wikimedia.org/r/q/Ia584966bb7d4d707eef50529293aa3d468470f18'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://gerrit.wikimedia.org/r/q/Idbc1b5a288ffaa7074eedcbac066358a8ec649dc'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T397497'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
tags:
  - nvd
epss: 0.00352
epssPercentile: 0.2673
ingestedAt: '2026-10-08T11:31:27.478Z'
---

## Overview

Incorrect Default Permissions vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43 before 1.44.

## Remediation

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