CVE-2025-61648 Details
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files modules/ext.CheckUser.TempAccounts/components/ShowIPButton.Vue, modules/ext.CheckUser.TempAccounts/SpecialBlock.Js. This issue affects CheckUser: from * before 1.44.1.
A cross-site scripting (XSS) vulnerability has been identified in the Wikimedia Foundation CheckUser extension, specifically in versions prior to 1.44.1. This issue arises from improper input sanitization during web page generation, allowing malicious users to inject harmful scripts. The vulnerability is linked to the 'ShowIPButton.Vue' component and the 'SpecialBlock.Js' file within the CheckUser extension's TempAccounts module.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://phabricator.wikimedia.org/T402077 | wikimedia-foundation | Permissions Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | wikimedia-foundation |
Affected Products
| Product | Versions |
|---|---|
| mediawiki checkuser | < 1.44.1 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | wikimedia-foundation |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 9, 2026 | Initial Analysis | [email protected] |
| Feb 3, 2026 | New CVE Received | wikimedia-foundation |