CVE-2026-100382

Unauthenticated remote code execution through wikitext in ExternalData

Published Sep 25, 2026 CVSS 4.0 · 10 Critical EPSS 1.2% KEV · Not listed
Description
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection.

This issue affects Mediawiki - ExternalData Extension: from * before 3.7.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia mediawiki - Externaldata Extension
Vendors & Products Wikimedia
Wikimedia mediawiki - Externaldata Extension
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection. This issue affects Mediawiki - ExternalData Extension: from * before 3.7.
Title Unauthenticated remote code execution through wikitext in ExternalData
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 10, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
Sep 26, 2026, 10:51 PM
Reserved
Sep 25, 2026, 7:28 PM
Status
Awaiting Analysis
Published
Sep 25, 2026, 10:17 PM
Modified
Sep 28, 2026, 4:38 PM