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Wikimedia Foundation Wikibase ExtensionVarious rawParams() and escaped() updates to prevent XSS in Wikibase extension

Risk 20
Severity
0.3
XSS
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber

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.

First published (updated )
CVE-2026-103439

Wikimedia Foundation Wikibase ExtensionReflected XSS in Wikibase Special:SetLabel language validation

Risk 34
Severity
5.3
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).

This issue affects Mediawiki - Wikibase Extension: from before 1.46.1, 1.45.5, 1.43.10.

First published (updated )
CVE-2026-100380

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