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CVE-2026-103441

Unauthenticated arbitrary file deletion through Wikibase serialized entity parsing

Deserialization of untrusted data vulnerability in The Wikimedia Foundation MediaWiki Wikibase extension allows Leverage Executable Code in Non-Executable Files. This issue affects MediaWiki Wikibase extension: 1.46, 1.45, and 1.43.

CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Wikimedia
Products
Mediawiki-wikibase Extension
CVE-2026-103439

Various rawParams() and escaped() updates to prevent XSS in Wikibase extension

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.

CVSS 4.0 · 0.3 Low EPSS < 1% KEV · Not listed
Vendors
Wikimedia
Products
Mediawiki-wikibase Extension
CVE-2026-100380

Reflected XSS in Wikibase Special:SetLabel language validation

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.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wikimedia
Products
Mediawiki-wikibase Extension
CVE-2026-22710

Stored XSS through autocomment system messages in Wikibase

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikibase Extension: 1.45, 1.44, 1.43, 1.39.

CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
Vendors
Mediawiki Wikimedia
Products
Mediawiki Mediawiki-wikibase Extension Wikibase