CVE-2026-0817CWE-862

CampaignEvents API missing authorization exposes meeting and chat URLs

Medium · published January 9, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
18.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00272 · 18.5th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-01-09T15:50Z
EPSS history
Timeline
  • 09 JAN 15:50Z
    CampaignEvents API missing authorization exposes meeting and chat URLs
    cvelistv5