CVE-2025-53478
BaseFortify
Publication date: 2025-07-07
Last updated on: 2025-07-08
Assigner: wikimedia-foundation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a reflected Cross-Site Scripting (XSS) issue in the CheckUser extension's Special:Investigate interface of Mediawiki. It occurs because certain internationalized system messages are not properly escaped when rendered on the 'IPs and User agents' tab, allowing an attacker to inject malicious scripts that get reflected back to the user.
How can this vulnerability impact me? :
The vulnerability can allow attackers to execute malicious scripts in the context of the victim's browser when they visit the affected interface. This can lead to theft of sensitive information, session hijacking, or other malicious actions performed on behalf of the user.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, upgrade the Mediawiki CheckUser extension to a fixed version: 1.39.13 or later if you are on the 1.39.X branch, 1.42.7 or later if on the 1.42.X branch, or 1.43.2 or later if on the 1.43.X branch. Avoid using vulnerable versions that improperly escape internationalized system messages in the Special:Investigate interface.