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Vulnerability record · CVE-2026-100382 · published 25 September 2026

CVE-2026-100382: OS command injection vulnerability

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.

10.0 CVSS 4.0 Critical EPSS 0.95% · top 40.4% CWE-78 · OS command injection Received
10.0CVSS 4.0 base score
0.95%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
26 Sep 2026Last modified by NVD

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.

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:

References

LinkTags
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ExternalData/+/1326012
https://phabricator.wikimedia.org/T434961

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Source: NIST National Vulnerability Database (record CVE-2026-100382), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.