[ CVE-2026-100240 · Published 29 Sep 2026 ]
Vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension
CVSS 9.1
EPSS <1%No fix listed yet
[ Why it matters ]Priority signals
- Critical severity: CVSS 9.1
[ Description ]Official description
Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.