CVE-2026-103439
Low
Description
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.
SeverityLow
CVSS0.3
Exploit probability—
ProductMediaWiki Wikbase extension
PublishedSep 30, 2026
First seenSep 30, 2026
Weakness typeCWE-80CWE-80
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| The Wikimedia Foundation MediaWiki Wikbase extension | 1.46, 1.45, 1.43 | — |
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