CVE-2020-15148
Yii 2 (yiisoft/yii2) before version 2.0.38 is vulnerable to remote code execution if the application calls `unserialize()` on arbitrary user input. This is fixed in version 2.0.38. A possible workaround without upgrading is available in the linked advisory.
Date published : 2020-09-15
https://github.com/yiisoft/yii2/security/advisories/GHSA-699q-wcff-g9mj
https://github.com/yiisoft/yii2/commit/9abccb96d7c5ddb569f92d1a748f50ee9b3e2b99