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TI-2026-41782 Aliases CVE-2026-58027GHSA-xf4f-w4h8-w7rr

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

Priority LOW 24CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-07
Fix Fixed AbuseFilter (Wikimedia Foundation): 1.46.0, 1.45.4, 1.44.6 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Wikimedia FoundationAbuseFilterbefore 1.46.0, 1.45.4, 1.44.6, 1.43.91.46.0, 1.45.4, 1.44.6, 1.43.9Patch availableCNA
  • AbuseFilter VendorWikimedia Foundation Affected before 1.46.0, 1.45.4, 1.44.6, 1.43.9 Fixed in 1.46.0, 1.45.4, 1.44.6, 1.43.9 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*1.43.0 to before 1.43.9; 1.44.0 to before 1.44.6; 1.45.0 to before 1.45.4Vulnerablemediawiki
cpe:2.3:a:mediawiki:mediawiki:1.46.0:rc0:*:*:*:*:*:*1.46.0 rc0Vulnerablemediawiki
  • cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* Versions 1.43.0 to before 1.43.9; 1.44.0 to before 1.44.6; 1.45.0 to before 1.45.4 Vulnerable ·mediawiki
  • cpe:2.3:a:mediawiki:mediawiki:1.46.0:rc0:*:*:*:*:*:* Versions 1.46.0 rc0 Vulnerable ·mediawiki

Remediation

  • Fix · CNA AbuseFilter (Wikimedia Foundation) Fixed in 1.46.0, 1.45.4, 1.44.6, 1.43.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58027
  2. 2026-10-03 Alias added: GHSA-xf4f-w4h8-w7rr

References

Other 1

  • TI-2025-11006 The compare API module breaks Extension:Lockdown CVSS 4.0CRITICAL 10.0
  • TI-2024-32110 Backticks can allow the usage of not-allowed SQL functions CVSS 4.0HIGH 8.8
  • TI-2026-65500 Unauthenticated SQL injection in UserPageViewTracker via filterusers and ignoreusers parameters CVSS 3.1HIGH 7.5
  • TI-2026-64588 DataTransfer depends on phpspreadsheet version vulnerable to CVE-2026-59933 (XLS/OLE memory exhaustion) CVSS 3.1HIGH 7.5
  • TI-2026-42112 SQLi in Cargo extension via year range filter CVSS 4.0MEDIUM 6.9
  • TI-2026-42110 Stored XSS through Cargo's map format CVSS 4.0MEDIUM 6.9
See all 255 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences