CVE-2026-0817

MEDIUM

MediaWiki CampaignEvents 1.39, 1.43-1.45 - Missing Authorization

Title source: llm

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.

References (2)

Core 2

Core References

Patch

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

Issue Tracking

https://phabricator.wikimedia.org/T410560

Scores

CVSS v3 5.3

EPSS 0.0025

EPSS Percentile 16.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-862

Status published

Products (4)

wikimedia/campaignevents 1.39

wikimedia/campaignevents 1.43

wikimedia/campaignevents 1.44

wikimedia/campaignevents 1.45

Published Jan 09, 2026

Tracked Since Feb 18, 2026