CVE-2026-100382Unauthenticated remote code execution through wikitext in ExternalData
Updated under an hour ago ()
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It affects Wikimedia Foundation Mediawiki - ExternalData Extension. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 10.0 CRITICAL (v4.0, CNA)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
- Weakness (CWE)
- CWE-78
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- wikimedia-foundation
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Wikimedia Foundation Mediawiki - ExternalData Extension wikimedia_foundation:mediawiki_externaldata_extension (from the name) | before 3.7 | CNA record |
References
- https://phabricator.wikimedia.org/T434961
- https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ExternalData/+/1326012
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.