CVE-2021-3692: Yiiframework Yii

Medium severity, CVSS 5.3. EPSS: 1.7% chance of exploitation in the next 30 days.

yii2 is vulnerable to Use of Predictable Algorithm in Random Number Generator

Affected products

• Yiiframework Yii: from 2.0.0, before 2.0.43 (fixed in 2.0.43)

Published 2021-08-10. Last modified 2026-06-17.