---
id: CVE-2026-100242
title: >-
  Dependency on Vulnerable Third-Party Component and Uncontrolled Resource
  Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer
  Extension allows Excessive Allocation.


  This issue affects Mediawiki - DataTransfer Exten…
summary: >-
  Dependency on Vulnerable Third-Party Component and Uncontrolled Resource
  Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer
  Extension allows Excessive Allocation.


  This issue affects Mediawiki - DataTransfer Exten…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-1395
vendor: Wikimedia Foundation
product: Mediawiki - DataTransfer Extension
affected:
  - mediawiki_-_datatransfer_extension >= 1.46.0 < 1.47.0
published: '2026-09-29'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T19:17:16.380'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100242'
references:
  - url: 'https://gerrit.wikimedia.org/r/q/Ibc4a9070c2425b690bc767a882e4c35046a39be7'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://github.com/advisories/GHSA-xh5m-36r6-47m3'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T433275'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://github.com/advisories/GHSA-xh5m-36r6-47m3'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00411
epssPercentile: 0.35214
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-01T18:11:41.266497Z'
ingestedAt: '2026-09-29T17:41:02.201Z'
---

## Overview

Dependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer Extension allows Excessive Allocation.

This issue affects Mediawiki - DataTransfer Extension: from 1.46.0 before 1.47.0.

## Remediation

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