Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki -… (CVE-2026-100382)
A critical OS Command Injection vulnerability exists in the Wikimedia Foundation Mediawiki ExternalData Extension. This vulnerability allows improper neutralization of special elements used in OS commands, potentially enabling command injection. It affects all versions of the ExternalData Extension prior to 3.7. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
The Wikimedia Foundation Mediawiki ExternalData Extension contains an OS Command Injection vulnerability (CVE-2026-100382) due to improper neutralization of special elements in OS commands. This flaw allows an attacker to inject and execute arbitrary OS commands. The vulnerability affects all versions before 3.7 of the ExternalData Extension. There is no vendor advisory or patch information provided, and no known exploits have been reported.
Potential Impact
Successful exploitation could allow an unauthenticated attacker to execute arbitrary operating system commands on the affected system, potentially leading to full system compromise. The vulnerability is rated critical due to the high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the ExternalData Extension and monitor for suspicious activity related to command execution attempts.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki -… (CVE-2026-100382)
Description
A critical OS Command Injection vulnerability exists in the Wikimedia Foundation Mediawiki ExternalData Extension. This vulnerability allows improper neutralization of special elements used in OS commands, potentially enabling command injection. It affects all versions of the ExternalData Extension prior to 3.7. No known exploits are reported in the wild at this time.
CVSS v4.0
Affected software
pkg:github/wikimedia/extensions/ExternalDataRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Wikimedia Foundation Mediawiki ExternalData Extension contains an OS Command Injection vulnerability (CVE-2026-100382) due to improper neutralization of special elements in OS commands. This flaw allows an attacker to inject and execute arbitrary OS commands. The vulnerability affects all versions before 3.7 of the ExternalData Extension. There is no vendor advisory or patch information provided, and no known exploits have been reported.
Potential Impact
Successful exploitation could allow an unauthenticated attacker to execute arbitrary operating system commands on the affected system, potentially leading to full system compromise. The vulnerability is rated critical due to the high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the ExternalData Extension and monitor for suspicious activity related to command execution attempts.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vwh3-jq98-4w28
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-100382"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab74f33f7a7c54106e138b7
Added to database: 09/26/2026, 04:50:59 UTC
Last enriched: 09/26/2026, 04:58:13 UTC
Last updated: 09/26/2026, 20:47:33 UTC
Views: 45
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