CVE-2026-100241

Private change tags exposed to anonymous users via revision-tags-change events

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

Description

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.

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 - EventBus ExtensionWikimedia Foundation	1.47.0-alphaAffected

References

https://phabricator.wikimedia.org/T432948
https://gerrit.wikimedia.org/r/q/I6d79037edc771fe9a2889c543e12cf7b1296aab8

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