CVE-2026-0817

CampaignEvents API missing authorization exposes meeting and chat URLs

State: Published
Severity: 5.3 Medium
Published: Jan 9, 2026
Updated: Jan 9, 2026
Reserved: Jan 9, 2026

Description

Missing Authorization vulnerability in Wikimedia Foundation MediaWiki - CampaignEvents extension allows Privilege Abuse.This issue affects MediaWiki - CampaignEvents extension: 1.45, 1.44, 1.43, 1.39.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
MediaWiki - CampaignEvents extensionWikimedia Foundation	1.45Affected 1.44Affected 1.43Affected 1.39Affected

References

https://phabricator.wikimedia.org/T410560
https://gerrit.wikimedia.org/r/q/I7ed0049691258c8bd2555e599b9b88490fbe3358

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