How to fix EUVD-2025-20087?

Within 24 hours: inventory all MediaWiki instances and identify current version numbers. Within 7 days: apply vendor-released patch to all affected MediaWiki installations and validate patch deployment. Within 30 days: conduct post-patch security validation and review access logs for indicators of exploitation attempts during the unpatched window.

Is PHP affected by EUVD-2025-20087?

CVE-2025-53485 is a high-severity vulnerability (CVSS 7.5) affecting MediaWiki that enables unauthenticated attackers to compromise affected instances. Organizations operating MediaWiki deployments must prioritize patching to prevent potential unauthorized access or data manipulation.

EUVD-2025-20087

| CVE-2025-53485 HIGH

2025-07-04 c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

PHP Authentication Bypass

7.5

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:35 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

1.43.2,1.42.7,1.39.13

Analysis Generated

Mar 16, 2026 - 02:42 vuln.today

EUVD ID Assigned

Mar 16, 2026 - 02:42 euvd

EUVD-2025-20087

CVE Published

Jul 04, 2025 - 18:15 nvd

HIGH 7.5

DescriptionNVD

SetTranslationHandler.php does not validate that the user is an election admin, allowing any (even unauthenticated) user to change election-related translation text. While partially broken in newer MediaWiki versions, the check is still missing.

This issue affects Mediawiki - SecurePoll extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

AnalysisAI

A security vulnerability in newer MediaWiki (CVSS 7.5). High severity vulnerability requiring prompt remediation.

Technical ContextAI

CWE-862 (Missing Authorization). CVSS 7.5 indicates high severity. Affects newer MediaWiki.

RemediationAI

Monitor vendor channels for patch availability.

EUVD-2025-20087 vulnerability details – vuln.today

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EUVD-2025-20087

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code