All vulnerabilities
CVE-2026-100244

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

Wikimedia Foundation Mediawiki - CentralAuth ExtensionApplications & CMS
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 16% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.46.1, 1.45.5, 1.43.10Fixed versionCVE List
Published29 Sep 2026Updated 30 Sep 2026CVE List

What fixes it

  • 1.46.1, 1.45.5, 1.43.10Mediawiki - CentralAuth ExtensionCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 1

  • Mediawiki - CentralAuth Extensionaffected: * before 1.46.1, 1.45.5, 1.43.10CVE List

References 2