CVE-2026-0817

5.3 MEDIUM

Published: January 09, 2026 Modified: February 10, 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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

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

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Patch

https://phabricator.wikimedia.org/T410560

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Issue Tracking

2 reference(s) from NVD

Quick Stats

CVSS v3 Score

5.3 / 10.0

EPSS (Exploit Probability)

0.0%

2th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-862

Affected Vendors

wikimedia

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