CVE-2026-0817

MEDIUM
2026-01-09 c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
5.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
Patch Released
Feb 10, 2026 - 20:20 nvd
Patch available
CVE Published
Jan 09, 2026 - 16:16 nvd
MEDIUM 5.3

Tags

Mediawiki Campaignevents

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.

Analysis

Insufficient access controls in the MediaWiki CampaignEvents extension (versions 1.39, 1.43, 1.44, 1.45) permit unauthenticated attackers to perform unauthorized actions by bypassing privilege checks. An attacker could exploit this vulnerability to gain elevated privileges within the extension without proper authorization. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +26
POC: 0

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CVE-2026-0817 vulnerability details – vuln.today
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