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VULNERABILITIES

CVE-2025-53478 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA: CISA-ADPCVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gerrit.wikimedia.org/r/q/I3a1e21b6800ff4d813a33ee9fe9b7ccf070b6b2e wikimedia-foundationSource CodeVendor
https://phabricator.wikimedia.org/T394692 wikimedia-foundationIssue TrackingVendor

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')wikimedia-foundation

Affected Products

ProductVersions
MediaWiki-CheckUser
>= 1.39, < 1.39.13
>= 1.42, < 1.42.7
>= 1.43, < 1.43.2

CPE

  • cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:mediawiki:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-53478
NVD Published Date:
Jul 7, 2025
NVD Last Modified:
Jun 17, 2026
Source:
wikimedia-foundation
CVE-2025-53478 Details - Not Deferred