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CVE-2026-100382

Unauthenticated remote code execution through wikitext in ExternalData

CVSS 4.0 10.0 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-100382

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-100382

Published

Mediawiki - ExternalData Extension

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Wikimedia Foundation",
                    "product": "Mediawiki - ExternalData Extension",
                    "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/ExternalData/+/refs/heads/master",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "*",
                            "lessThan": "3.7",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON