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.
Exploitability
AV:NAC:HPR:NUI:NScope
S:CImpact
C:HI:HA:H9/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HOther