{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-100382", "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "state": "PUBLISHED", "assignerShortName": "wikimedia-foundation", "dateReserved": "2026-09-25T19:28:16.149Z", "datePublished": "2026-09-25T21:04:02.848Z", "dateUpdated": "2026-09-26T22:51:17.735Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc", "shortName": "wikimedia-foundation", "dateUpdated": "2026-09-25T21:04:02.848Z" }, "title": "Unauthenticated remote code execution through wikitext in ExternalData", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-78", "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-88", "descriptions": [ { "lang": "en", "value": "CAPEC-88 OS Command Injection" } ] } ], "affected": [ { "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" } ], "descriptions": [ { "lang": "en", "value": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection.\n\nThis issue affects Mediawiki - ExternalData Extension: from * before 3.7.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "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.

" } ] } ], "references": [ { "url": "https://phabricator.wikimedia.org/T434961" }, { "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ExternalData/+/1326012" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 10, "vectorString": "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" } } ], "credits": [ { "lang": "en", "value": "SomeRandomDeveloper", "type": "finder" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.2" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-100382", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-09-26T22:43:20.551535Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-26T22:51:17.735Z" } } ] } }