---
id: CVE-2018-25246
title: >-
  Wikipedia 12.0 contains a denial of service vulnerability that allows
  unauthenticated attackers to crash the application by submitting oversized
  input through the search functionality
summary: >-
  Wikipedia 12.0 contains a denial of service vulnerability that allows
  unauthenticated attackers to crash the application by submitting oversized
  input through the search functionality. Attackers can paste a large buffer of
  repeated chara…
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-306
published: '2026-04-04'
updated: '2026-07-21'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2018-25246'
references:
  - url: 'https://www.exploit-db.com/exploits/45324'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.microsoft.com/en-us/p/wikipedia/9wzdncrfhwm4?activetab=pivot%3aoverviewtab
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00357
epssPercentile: 0.29418
ingestedAt: '2026-07-21T16:51:41.703Z'
---

## Overview

Wikipedia 12.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting oversized input through the search functionality. Attackers can paste a large buffer of repeated characters into the search bar to trigger an application crash.

## Remediation

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