yiisoft · yiisoft/yii2
In yiisoft/yii2 version 2.0.48, the base Component class contains a vulnerability where the `__set()` magic method does not validate that the value passed is a valid Behavior class name or configuration. This allows an attacker to instantiate arbitrary classes, passing parameters to their constructors and invoking setter methods. Depending on the installed dependencies, various types of attacks are possible, including the execution of arbitrary code, retrieval of sensitive information, and unauthorized access.
Disclosed on 20 Mar 2025. No public exploit code or confirmed exploitation is recorded.
A fix was bypassed or incomplete once over 10 months. The latest fix listed for yiisoft/yii2 is 2.0.55.
Why these are linked: Link confidenceHow strong the evidence is that two CVEs are related. High: stated in the CVE text or linked in an advisory, or the same code was patched one release apart. Medium: the same code, or a version step plus a similar description. Low: similar description only.
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.
No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
1 package in 1 ecosystem. Main package: yiisoft/yii2.
Upgrade to 2.0.52 or later
Fixes this CVE and 2 other known vulnerabilities in this package (CVE-2020-15148, CVE-2024-58136).
Set the version to 2.0.52 or later in your composer.json.
First fixed in 2.0.49.4 for CVE-2024-4990.
| If you run | Upgrade to |
|---|---|
| All versions before 2.0.49.4 | 2.0.52first fix for this CVE: 2.0.49.4 |
“Up to” means the second version is the fix and is not affected.