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yiisoft/yii2 Mishandles the Attaching of Behavior Defined by a `__class` Array Key

Critical severity GitHub Reviewed Published Apr 10, 2025 to the GitHub Advisory Database • Updated Jul 30, 2025

Package

composer yiisoft/yii2 (Composer)

Affected versions

< 2.0.52

Patched versions

2.0.52

Description

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.

References

Published by the National Vulnerability Database Apr 10, 2025
Published to the GitHub Advisory Database Apr 10, 2025
Reviewed Apr 10, 2025
Last updated Jul 30, 2025

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(99th percentile)

Weaknesses

Improper Protection of Alternate Path

The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources. Learn more on MITRE.

CVE ID

CVE-2024-58136

GHSA ID

GHSA-ggwg-cmwp-46r5

Source code

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