CVE-2026-34091

HIGH

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.

CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Published: 5/11/2026Modified: 5/14/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-34091 — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wiki...

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.

CVE-2026-34091
NIST NVD

References (1)

https://phabricator.wikimedia.org/T411305Issue TrackingVendor Advisory