CVE-2026-34086 LOW

CVE-2026-34086: AbuseFilter misuses ::userCanBitfield, exposing access-controlled information

Vendor Wikimedia Foundation
Product AbuseFilter
Published May 11, 2026
Last update May 11, 2026
View on NVD All CVEs

CVSS base score

2.1/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/S:N/AU:Y

What the vulnerability does

01Description

Vulnerability in Wikimedia Foundation AbuseFilter. This issue affects AbuseFilter: from * before 1.43.7, 1.44.4, 1.45.2.

Key dates

02Disclosure timeline

May 11, 2026 CVE published
May 11, 2026 Record updated