CVE-2026-100245 Stored XSS on Wikibase Special:SetSiteLink via unescaped system message

Improper Neutralization of Input During Web Page Generation XSS or 'Cross-site Scripting' vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS. This issue affects Mediawiki - Wikibase Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100245

The Wikimedia Foundation Mediawiki - Wikibase Extension is vulnerable to a Stored Cross-Site Scripting (XSS) flaw due to the improper neutralization of input during web page generation. Specifically, the vulnerability occurs on Wikibase Special:SetSiteLink when an unescaped system message is proc...

CVE-2026-100244 CentralAuth exposes locally suppressed block information via globaluserinfo API and Special:CentralAuth (incomplete fix for CVE-2025-62669)

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation. This issue affects Mediawiki - CentralAuth Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100244

The Wikimedia Foundation Mediawiki - CentralAuth Extension is vulnerable to an Exposure of Sensitive Information to an Unauthorized Actor vulnerability. The flaw allows for the exposure of locally suppressed block information via the globaluserinfo API and Special:CentralAuth . This issue is char...

EUVD-2026-89090

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation. This issue affects Mediawiki - CentralAuth Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100244 CentralAuth exposes locally suppressed block information via globaluserinfo API and Special:CentralAuth (incomplete fix for CVE-2025-62669)

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation. This issue affects Mediawiki - CentralAuth Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100243 Stored XSS in WikiSEO author and image properties on action=info

Improper Neutralization of Input During Web Page Generation XSS or 'Cross-site Scripting' vulnerability in Wikimedia Foundation Mediawiki - WikiSEO Extension allows Stored XSS. This issue affects Mediawiki - WikiSEO Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100243

The Wikimedia Foundation Mediawiki - WikiSEO Extension is vulnerable to Stored Cross-Site Scripting (XSS) due to the improper neutralization of input during web page generation. Specifically, the vulnerability exists in the author and image properties when accessed via action=info . This issue af...

EUVD-2026-89084

Improper Neutralization of Input During Web Page Generation XSS or 'Cross-site Scripting' vulnerability in Wikimedia Foundation Mediawiki - WikiSEO Extension allows Stored XSS. This issue affects Mediawiki - WikiSEO Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100243 Stored XSS in WikiSEO author and image properties on action=info

Improper Neutralization of Input During Web Page Generation XSS or 'Cross-site Scripting' vulnerability in Wikimedia Foundation Mediawiki - WikiSEO Extension allows Stored XSS. This issue affects Mediawiki - WikiSEO Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100242 DataTransfer depends on phpspreadsheet version vulnerable to CVE-2026-59933 (XLS/OLE memory exhaustion)

Dependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer Extension allows Excessive Allocation. This issue affects Mediawiki - DataTransfer Extension: from 1.46.0 before 1.47.0...

CVE-2026-100242

The Mediawiki - DataTransfer Extension (versions 1.46.0 before 1.47.0 ) is vulnerable to a Dependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption (CWE-1395, CWE-400). The issue stems from a dependency on a phpspreadsheet version susceptible to CVE-2026-59933 , which ...

EUVD-2026-89081

Dependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer Extension allows Excessive Allocation. This issue affects Mediawiki - DataTransfer Extension: from 1.46.0 before 1.47.0...

CVE-2026-100242 DataTransfer depends on phpspreadsheet version vulnerable to CVE-2026-59933 (XLS/OLE memory exhaustion)

Dependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer Extension allows Excessive Allocation. This issue affects Mediawiki - DataTransfer Extension: from 1.46.0 before 1.47.0...

CVE-2026-100241 Private change tags exposed to anonymous users via revision-tags-change events

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - EventBus Extension allows Excavation. This issue affects Mediawiki - EventBus Extension: 1.47.0-alpha...

CVE-2026-100241

The Wikimedia Foundation Mediawiki - EventBus Extension (version 1.47.0-alpha ) is vulnerable to an Exposure of Sensitive Information to an Unauthorized Actor vulnerability. Specifically, private change tags are exposed to anonymous users via revision-tags-change events . This flaw allows for the...

EUVD-2026-89071

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - EventBus Extension allows Excavation. This issue affects Mediawiki - EventBus Extension: 1.47.0-alpha...

CVE-2026-100241 Private change tags exposed to anonymous users via revision-tags-change events

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - EventBus Extension allows Excavation. This issue affects Mediawiki - EventBus Extension: 1.47.0-alpha...

CVE-2026-100240 TemplateSandbox does not check read permissions for the page being previewed

Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from before 1.46.1, 1.45.5, 1.43.10...

CVE-2026-100240 TemplateSandbox does not check read permissions for the page being previewed

Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from before 1.46.1, 1.45.5, 1.43.10...