Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an class array key, a CVE-2024-4990 regression, as exploited in the wild in February through April 2025.

A vulnerability, which was classified as critical, was found in yiisoft Yii2 up to 2.0.39. This affects the function Generate of the file phpunit\src\Framework\MockObject\MockClass.php. The manipulation leads to deserialization. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

A vulnerability, which was classified as critical, has been found in yiisoft Yii2 up to 2.0.45. Affected by this issue is the function getIterator of the file symfony\finder\Iterator\SortableIterator.php. The manipulation leads to deserialization. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

yiisoft/yii before version 1.1.27 are vulnerable to Remote Code Execution (RCE) if the application calls unserialize() on arbitrary user input. This has been patched in 1.1.27.

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

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

Potential remote code execution in LUA context of the redis server via methods yii\redis\ActiveRecord::findOne() and ::findAll()

Possibility of manipulated condition when unfiltered input is passed to yii\elasticsearch\ActiveRecord::findOne() and ::findAll()

Potential SQL injection in methods yii\db\ActiveRecord::findOne() and ::findAll()