SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2024-58136

Yiiframework Yii Improper Protection of Alternate Path Vulnerability

KEVCRITICAL 9.8EPSS 84.6%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 23 May 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

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.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
84.61% probability · 100th percentile
CISA KEV
Listed 2 May 2025 · due 23 May 2025
Weakness
CWE-424
Affected
yiiframework/yii
Source
cve@mitre.org

CISA notes

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see: https://www.yiiframework.com/news/709/please-upgrade-to-yii-2-0-52 ; https://nvd.nist.gov/vuln/detail/CVE-2024-58136

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.