What is the severity of CVE-2025-3469?

CVE-2025-3469 has been classified as a moderate severity Cross-site Scripting (XSS) vulnerability affecting MediaWiki.

What versions of MediaWiki are affected by CVE-2025-3469?

CVE-2025-3469 affects MediaWiki versions prior to 1.39.12 and between 1.42.6 to 1.43.1.

How do I fix CVE-2025-3469?

To fix CVE-2025-3469, upgrade your MediaWiki installation to version 1.39.12 or later, or ensure you are outside the vulnerable range of 1.42.6 to 1.43.1.

What kind of vulnerability is CVE-2025-3469?

CVE-2025-3469 is an Improper Neutralization of Input During Web Page Generation, commonly known as a Cross-site Scripting (XSS) vulnerability.

Who is affected by CVE-2025-3469?

Users and administrators of Wikimedia Foundation's MediaWiki software prior to version 1.39.12 and within the specified range are affected by CVE-2025-3469.

Vulnerability/
CVE-2025-3469

low

CWE

EPSS

0.093%

10/4/2025

11/4/2025

CVE-2025-3469: i18n XSS vulnerability in HTMLMultiSelectField when sections are used

First published: Thu Apr 10 2025(Updated: )

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLMultiSelectField.Php. This issue affects MediaWiki: before 1.39.12, 1.42.6, 1.43.1.

Credit: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Affected Software	Affected Version	How to fix
MediaWiki	<1.39.12>=1.42.6<1.43.1

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Reference Links

https://phabricator.wikimedia.org/T358689

Frequently Asked Questions

What is the severity of CVE-2025-3469?
CVE-2025-3469 has been classified as a moderate severity Cross-site Scripting (XSS) vulnerability affecting MediaWiki.
What versions of MediaWiki are affected by CVE-2025-3469?
CVE-2025-3469 affects MediaWiki versions prior to 1.39.12 and between 1.42.6 to 1.43.1.
How do I fix CVE-2025-3469?
To fix CVE-2025-3469, upgrade your MediaWiki installation to version 1.39.12 or later, or ensure you are outside the vulnerable range of 1.42.6 to 1.43.1.
What kind of vulnerability is CVE-2025-3469?
CVE-2025-3469 is an Improper Neutralization of Input During Web Page Generation, commonly known as a Cross-site Scripting (XSS) vulnerability.
Who is affected by CVE-2025-3469?
Users and administrators of Wikimedia Foundation's MediaWiki software prior to version 1.39.12 and within the specified range are affected by CVE-2025-3469.

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