What is the CVSS score of CVE-2024-4990?

CVE-2024-4990 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H. EPSS exploitation probability: 0.2%.

Which versions of Yii are affected by CVE-2024-4990?

Organizations using yiisoft/yii2 face critical risk from CVE-2024-4990 rated CVSS 9.1.. A patch is available.

Is there a public PoC exploit available for CVE-2024-4990?

Yes, a public proof-of-concept exploit is available for CVE-2024-4990. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2024-4990?

Within 24 hours: Identify all affected systems running yiisoft/yii2 and apply vendor patches immediately. Monitor vendor channels for patch availability.

Yii CVE-2024-4990

CRITICAL

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') (CWE-470)

2025-03-20 security@huntr.dev

RCE Authentication Bypass Yii

9.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.1 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:32 vuln.today

PoC Detected

Apr 01, 2025 - 20:34 vuln.today

Public exploit code

CVE Published

Mar 20, 2025 - 10:15 nvd

CRITICAL 9.1

DescriptionCVE.org

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.

AnalysisAI

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. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-470. 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. Affected products include: Yiiframework Yii. Version information: version 2.0.48.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2024-4990 vulnerability details – vuln.today

Back

Yii CVE-2024-4990

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

Share

External POC / Exploit Code