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 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...