PT-2026-5736 · Wikimedia Foundation · Checkuser

Published 2026-02-03 · Updated 2026-02-03 · CVE-2025-61648

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Wikimedia Foundation CheckUser versions prior to 1.44.1

Description The software contains an Improper Neutralization of Input During Web Page Generation issue, also known as Cross-site Scripting (XSS). The issue is found in program files modules/ext.CheckUser.TempAccounts/components/ShowIPButton.Vue and modules/ext.CheckUser.TempAccounts/SpecialBlock.Js.

Recommendations Update to CheckUser version 1.44.1 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-61648

Affected Products

Checkuser

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2025-61648 · Security Note
• https://twitter.com/CVEnew/status/2018497459933364466 · Twitter Post
• https://phabricator.wikimedia.org/T402077 · Note
• https://t.me/CVEtracker/43533 · Telegram Post