CVE-2026-100244

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

State: Published
Severity: 7.5 High
Published: Sep 29, 2026
Updated: Sep 30, 2026
Reserved: Sep 25, 2026

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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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
Mediawiki - CentralAuth ExtensionWikimedia Foundation	before 1.46.1, 1.45.5, 1.43.10Affected

References

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