Risk Letters

Exploited vulnerability

CVE-2026-100382

TLP:CLEAR

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

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.

Facts

  • Vendor: Wikimedia Foundation
  • Product: Mediawiki - ExternalData Extension
  • EPSS (probability of exploitation within 30 days): 1.2 %
  • First known exploitation: 27 September 2026
  • First seen by Risk Letters: 27 September 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD