CVE-2018-20745: Yiiframework Yii

Medium severity, CVSS 5.9. EPSS: 0.5% chance of exploitation in the next 30 days.

Yii 2.x through 2.0.15.1 actively converts a wildcard CORS policy into reflecting an arbitrary Origin header value, which is incompatible with the CORS security design, and could lead to CORS misconfiguration security problems.

Affected products

• Yiiframework Yii: from 2.0, up to and including 2.0.15.1

Published 2019-01-28. Last modified 2026-06-17.