Wikimedia Mediawiki up to 1.43.8/1.44.5/1.45.3 cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in Wikimedia Mediawiki up to 1.43.8/1.44.5/1.45.3. This vulnerability affects unknown code. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2026-14358. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Wikimedia Mediawiki up to 1.43.8/1.44.5/1.45.3. It has been classified as problematic. This affects some unknown processing. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Charts Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Charts Extension: from * before 1.43.9,1.44.6,1.45.4.

The weakness was published by Reedy. It is possible to read the advisory at phabricator.wikimedia.org. This vulnerability is uniquely identified as CVE-2026-14358 since 07/01/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 1.43.9, 1.44.6 or 1.45.4 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• Wikimedia

Name

• Mediawiki

Version

• 1.43.0
• 1.43.1
• 1.43.2
• 1.43.3
• 1.43.4
• 1.43.5
• 1.43.6
• 1.43.7
• 1.43.8
• 1.44.0
• 1.44.1
• 1.44.2
• 1.44.3
• 1.44.4
• 1.44.5
• 1.45.0
• 1.45.1
• 1.45.2
• 1.45.3

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

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• 🔒
• 🔒

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Threat Intelligenceinfo

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Entryinfo

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