[ CVE-2026-103474 · Published 30 Sep 2026 ]

Vulnerability in yii2-starter-kit

CVSS 8.8 EPSS <1%No fix listed yet

[ Description ]Official description

yii2-starter-kit through 4.2.0 fails to validate file types in the backend storage upload actions, allowing authenticated managers to upload PHP files. Attackers with manager role can upload PHP scripts to the web-accessible storage directory and request them to execute arbitrary code on the server.

[ 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.