How to fix CVE-2025-53499?

Within 24 hours: Inventory all MediaWiki instances running AbuseFilter extension and identify those on versions 1.43.0-1.43.1. Within 7 days: Upgrade AbuseFilter extension to version 1.43.2 or later on all affected MediaWiki installations; verify upgrade completion and test filter functionality. Within 30 days: Audit AbuseFilter access logs and filter configurations for unauthorized modifications during the vulnerable period; document any changes and restore configurations if needed.

CVE-2025-53499

EUVD-2025-20313 CRITICAL

2025-07-07 c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Authentication Bypass

9.1

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 05:52 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

patch_available

Apr 16, 2026 - 05:29 EUVD

1.43.2,1.39.13,1.42.7

Analysis Generated

Mar 16, 2026 - 03:37 vuln.today

EUVD ID Assigned

Mar 16, 2026 - 03:37 euvd

EUVD-2025-20313

CVE Published

Jul 07, 2025 - 19:15 nvd

CRITICAL 9.1

DescriptionNVD

Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Unauthorized Access.This issue affects Mediawiki - AbuseFilter Extension: from 1.43.X before 1.43.2.

AnalysisAI

Technical ContextAI

This vulnerability is classified as Missing Authorization (CWE-862).

RemediationAI

Monitor vendor advisories for patches. Apply mitigations such as network segmentation, access restrictions, and monitoring.

CVE-2025-53499 vulnerability details – vuln.today

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CVE-2025-53499

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code