CVE-2025-6589

With MultiBlocks enabled and a user who is suppressed via a MultiBlock, a user without 'hideuser' can see the hidden username in the BlockList

Low · published February 2, 2026

CVSS v4.0
2.1
EPSS
0%
Percentile
41.0
In the wild
Unconfirmed
What it is

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.

This issue affects MediaWiki: >= 1.42.0.

The record
Technical detail
CVSS v4.0
2.1 · LOW
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y
EPSS
0.00487 · 41.0th percentile
Published
2026-02-02T23:03Z
EPSS history
Timeline
  • 02 FEB 23:03Z
    With MultiBlocks enabled and a user who is suppressed via a MultiBlock, a user without 'hideuser' can see the hidden username in the BlockList
    cvelistv5