{"id":"CVE-2026-100382","aliases":["EUVD-2026-87348","GHSA-vwh3-jq98-4w28"],"status":"published","title":"Unauthenticated remote code execution through wikitext in ExternalData","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.\n\nThis issue affects Mediawiki - ExternalData Extension: from * before 3.7.","severity":{"version":"4.0","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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01214,"percentile":0.68797,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-78"],"published":"2026-09-25T21:04:02Z","modified":"2026-09-28T16:38:10Z","exploits":[{"source":"pocgithub","id":"nth347/mediawiki-CVE-2026-100382","title":"nth347/mediawiki-CVE-2026-100382","date":"2026-09-27","url":"https://github.com/nth347/mediawiki-CVE-2026-100382"}],"products":[{"vendor":"wikimedia foundation","product":"mediawiki - externaldata extension"}],"references":[{"url":"https://phabricator.wikimedia.org/T434961"},{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ExternalData/+/1326012"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100382"},{"url":"https://github.com/advisories/GHSA-vwh3-jq98-4w28"}],"sources":{"cve":[{"id":"CVE-2026-100382","title":"Unauthenticated remote code execution through wikitext in ExternalData","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.\n\nThis issue affects Mediawiki - ExternalData Extension: from * before 3.7.","status":"published","published":"2026-09-25T21:04:02.848Z","modified":"2026-09-26T22:51:17.735Z","cvss":[{"version":"4.0","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","level":"critical","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:20:06.925367Z"}],"euvd":[{"id":"EUVD-2026-87348","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.\n\nThis issue affects Mediawiki - ExternalData Extension: from * before 3.7.","status":"published","published":"2026-09-25T21:04:02Z","modified":"2026-09-26T22:51:17Z","cvss":[{"version":"4.0","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","level":"critical"}],"updated_at":"2026-11-02T17:27:54.286776Z"}],"ghsa":[{"id":"GHSA-vwh3-jq98-4w28","title":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')...","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.\n\nThis issue affects Mediawiki - ExternalData Extension: from * before 3.7.","status":"published","published":"2026-09-26T00:32:18Z","modified":"2026-09-26T00:32:22Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:12:27.845198Z"}],"nvd":[{"id":"CVE-2026-100382","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.\n\nThis issue affects Mediawiki - ExternalData Extension: from * before 3.7.","status":"published","published":"2026-09-25T22:17:10.15Z","modified":"2026-09-28T16:38:10.183Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:51.721923Z"}]}}