Wikimedia MediaWiki up to 1.39.11/1.42.5/1.43.0 HTMLMultiSelectField.Php cross site scripting

Summaryinfo

A vulnerability was found in Wikimedia MediaWiki up to 1.39.11/1.42.5/1.43.0. It has been declared as problematic. Impacted is an unknown function of the file includes/htmlform/fields/HTMLMultiSelectField.Php. Executing a manipulation can lead to cross site scripting. This vulnerability appears as CVE-2025-3469. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Wikimedia MediaWiki up to 1.39.11/1.42.5/1.43.0. This vulnerability affects some unknown processing of the file includes/htmlform/fields/HTMLMultiSelectField.Php. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

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.

The weakness was presented by Daimona. The advisory is shared for download at phabricator.wikimedia.org. This vulnerability was named CVE-2025-3469 since 04/09/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

By approaching the search of inurl:includes/htmlform/fields/HTMLMultiSelectField.Php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 234245 (Debian dsa-5901 : mediawiki - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.39.12, 1.42.6 or 1.43.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (234245). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Content Management System

Vendor

• Wikimedia

Name

• MediaWiki

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.39.0
• 1.39.1
• 1.39.2
• 1.39.3
• 1.39.4
• 1.39.5
• 1.39.6
• 1.39.7
• 1.39.8
• 1.39.9
• 1.39.10
• 1.39.11
• 1.40
• 1.41
• 1.42
• 1.42.0
• 1.42.1
• 1.42.2
• 1.42.3
• 1.42.4
• 1.42.5
• 1.43.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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