CVE-2024-58136 — Yiiframework Yii Improper Protection of Alternate Path Vulnerability

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
yiiframework	Yii	2

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2025-05-02. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

08Timeline

• Published: 2025-04-10T00:00:00.000Z
• Last modified: 2025-10-21T22:55:21.228Z
• Added to CISA KEV: 2025-05-02
• BOD 22-01 due: 2025-05-23

09References

• github.com — https://github.com/yiisoft/yii2/pull/20232
• github.com — https://github.com/yiisoft/yii2/pull/20232#issuecomment-2252459709
• github.com — https://github.com/yiisoft/yii2/commit/40fe496eda529fd1d933b56a1022ec32d3cd0b12
• github.com — https://github.com/yiisoft/yii2/compare/2.0.51...2.0.52
• www.yiiframework.com — https://www.yiiframework.com/news/709/please-upgrade-to-yii-2-0-52