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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

🗓️ 02 Feb 2026 23:03:45Reported by wikimedia-foundationType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

MultiBlocks lets a user without hideuser see a hidden username in BlockList on MediaWiki 1.42+.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2025-6589
2 Feb 202623:03
attackerkb
CNNVD
MediaWiki 安全漏洞
2 Feb 202600:00
cnnvd
CVE
CVE-2025-6589
2 Feb 202623:03
cve
Debian CVE
CVE-2025-6589
2 Feb 202623:03
debiancve
NVD
CVE-2025-6589
2 Feb 202623:16
nvd
OpenVAS
MediaWiki < 1.39.13, 1.40.x < 1.42.7, 1.43.x < 1.43.2 Multiple Vulnerabilities - Linux
14 Jul 202500:00
openvas
OpenVAS
MediaWiki < 1.39.13, 1.40.x < 1.42.7, 1.43.x < 1.43.2 Multiple Vulnerabilities - Windows
14 Jul 202500:00
openvas
OSV
DEBIAN-CVE-2025-6589
2 Feb 202623:16
osv
OSV
UBUNTU-CVE-2025-6589
2 Feb 202623:16
osv
Positive Technologies
PT-2025-27759
1 Jan 202500:00
ptsecurity
Rows per page
[
  {
    "defaultStatus": "unaffected",
    "product": "MediaWiki",
    "programFiles": [
      "includes/specials/pagers/BlockListPager.php"
    ],
    "repo": "https://gerrit.wikimedia.org/g/mediawiki/core/+/refs/heads/master",
    "vendor": "Wikimedia Foundation",
    "versions": [
      {
        "status": "affected",
        "version": ">= 1.42.0"
      }
    ]
  }
]

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02 Feb 2026 23:03Current
CVSS 42.1
EPSS0.00028
29