CVE-2026-100382 PUBLISHED

Unauthenticated remote code execution through wikitext in ExternalData

Assigner: wikimedia-foundation
Reserved: 25.09.2026 Published: 25.09.2026 Updated: 25.09.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 10

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Wikimedia Foundation
Product	Mediawiki - ExternalData Extension
Versions	Default: unaffected affected from * to 3.7 (excl.)

Credits

SomeRandomDeveloper finder

References

Problem Types

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE

Impacts

CAPEC-88 OS Command Injection