CVE-2026-58027

QueryAbuseFilter API can be used to see the hit count of private filters, which is hidden in the UI

Published Jul 1, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation AbuseFilter.

This vulnerability is associated with program files includes/Api/QueryAbuseFilters.Php.



This issue affects AbuseFilter: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6380-1 mediawiki security update
References
History
Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia abusefilter
Vendors & Products Wikimedia
Wikimedia abusefilter
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation AbuseFilter. This vulnerability is associated with program files includes/Api/QueryAbuseFilters.Php. This issue affects AbuseFilter: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
Title QueryAbuseFilter API can be used to see the hit count of private filters, which is hidden in the UI
Weaknesses CWE-200
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
Jul 1, 2026, 3:49 PM
Reserved
Jun 27, 2026, 1:32 PM
Status
Analyzed
Published
Jul 1, 2026, 4:16 PM
Modified
Oct 25, 2026, 5:10 PM