CVE-2026-34086

AbuseFilter misuses ::userCanBitfield, exposing access-controlled information

Low · published May 11, 2026

CVSS v4.0
2.1
EPSS
0%
Percentile
23.2
In the wild
Unconfirmed
What it is

Vulnerability in Wikimedia Foundation AbuseFilter.

This issue affects AbuseFilter: from * before 1.43.7, 1.44.4, 1.45.2.

The record
Technical detail
CVSS v4.0
2.1 · LOW
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
EPSS
0.00315 · 23.2th percentile
Published
2026-05-11T14:35Z
EPSS history
Timeline
  • 11 MAY 14:35Z
    AbuseFilter misuses ::userCanBitfield, exposing access-controlled information
    cvelistv5