PHP file inclusion in Yii - CVE-2026-39850
Published: May 11, 2026
Vulnerability identifier: #VU130923
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-39850
CWE-ID: CWE-98
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Yii Software
Affected software:
Yii
Yii
Detailed vulnerability description
The vulnerability allows a remote attacker to include and execute arbitrary PHP files on the server.
The vulnerability exists due to incorrect input validation when including PHP files within view parameter name collision. A remote attacker can include and execute arbitrary PHP code on the system.
How to mitigate CVE-2026-39850
Install updates from vendor's website.