How severe is GHSA-ggwg-cmwp-46r5?

GHSA-ggwg-cmwp-46r5 has a CVSS score of 9/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-ggwg-cmwp-46r5?

GHSA-ggwg-cmwp-46r5 affects the following packages: yiisoft/yii2 (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-ggwg-cmwp-46r5?

Update yiisoft/yii2 to version 2.0.52 or later. Run your dependency manager's update command and verify no transitive dependencies pin the vulnerable version. Use O3 Security's SCA scanner to confirm the fix is applied across your entire dependency tree.

Is GHSA-ggwg-cmwp-46r5 actively exploited in the wild?

No public exploit code has been indexed for GHSA-ggwg-cmwp-46r5 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-ggwg-cmwp-46r5?

GHSA-ggwg-cmwp-46r5 has an EPSS (Exploit Prediction Scoring System) score of 77.3%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is GHSA-ggwg-cmwp-46r5 in the CISA Known Exploited Vulnerabilities catalog?

Yes. GHSA-ggwg-cmwp-46r5 (Yiiframework Yii Improper Protection of Alternate Path Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-05-02. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-05-23. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is GHSA-ggwg-cmwp-46r5?

GHSA-ggwg-cmwp-46r5 is classified as CWE-424 (CWE-424). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Is there exploit tooling available for GHSA-ggwg-cmwp-46r5?

A Nuclei detection template exists for GHSA-ggwg-cmwp-46r5, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was GHSA-ggwg-cmwp-46r5 published, and has it been updated?

GHSA-ggwg-cmwp-46r5 was published on April 10, 2025 and was last updated on October 22, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2025-05-02 — agencies required to remediate by 2025-05-23

🐘 Packagist

GHSA-ggwg-cmwp-46r5

CRITICAL

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

Also known asCVE-2024-58136

Published

Apr 10, 2025

Updated

Oct 22, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

77.3%probability of exploitation in next 30 days

Very High Risk99th percentile-1.68%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

🐘yiisoft/yii2

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

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.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`yiisoft/yii2`	all versions	2.0.52

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

Is GHSA-ggwg-cmwp-46r5 in your stack?

O3 detects GHSA-ggwg-cmwp-46r5 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

9/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

High

PR:Privileges Required

None

UI:User Interaction

None

S:Scope

Changed

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

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

CWE Classification

Weaponization

OpenSSF Scorecard

Package health score

yii2

4.4/10

Maintained10/10

Code-Review8/10

Branch-ProtectionN/A

Assessed Jun 1, 2026

Timeline

Disclosed

Apr 10, 2025

KEV added

May 2, 2025

Last updated

Oct 22, 2025

Identifiers

GHSA-ggwg-cmwp-46r5

References

Advisorynvd.nist.gov Webgithub.com Webgithub.com Webgithub.com Webgithub.com Websensepost.com Webcisa.gov Webyiiframework.com Packagegithub.com

Data from OSV.dev, enriched by O3 Security. Refreshed hourly.