CVE-2024-58136 — AI Deep Analysis Summary

Q: What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Yii 2 < 2.0.52 has a critical RCE flaw. 📉 **Consequences**: Attackers can execute arbitrary PHP code remotely. 💥 **Impact**: Full system compromise via improper behavior attachment handling.

Q: Who is affected? (Versions/Components)

🎯 **Target**: Yii Framework (Yii2). 📦 **Affected Versions**: All versions **before 2.0.52**. ✅ **Fixed In**: Version 2.0.52 and later. 🏢 **Vendor**: Yiisoft.

Q: What can hackers do? (Privileges/Data)

💻 **Privileges**: Remote Code Execution (RCE). 🔓 **Access**: Unauthenticated (PR:N). 📂 **Data**: Full read/write access to server files and database. 🌐 **Scope**: System-wide compromise (S:C).

Q: Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: Low. 🚫 **Auth Required**: None (PR:N). 🖱️ **User Interaction**: None (UI:N). 🌍 **Attack Vector**: Network (AV:N). 📉 **Complexity**: High (AC:H), but still critical.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL. 🚨 **Priority**: Immediate patching required. ⏳ **Risk**: High due to RCE and lack of auth requirement. 📢 **Action**: Upgrade to 2.0.52 ASAP to prevent total compromise.

Updated May 06, 2026 CVSS 9.0 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Yii 2 < 2.0.52 has a critical RCE flaw. 📉 **Consequences**: Attackers can execute arbitrary PHP code remotely. 💥 **Impact**: Full system compromise via improper behavior attachment handling.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-424 (Improper Restriction of Externally Managed Resources). 🐛 **Flaw**: The framework fails to properly validate the `__class` key in JSON behaviors.…

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Q3Who is affected? (Versions/Components)

🎯 **Target**: Yii Framework (Yii2). 📦 **Affected Versions**: All versions **before 2.0.52**. ✅ **Fixed In**: Version 2.0.52 and later. 🏢 **Vendor**: Yiisoft.

Q4What can hackers do? (Privileges/Data)

💻 **Privileges**: Remote Code Execution (RCE). 🔓 **Access**: Unauthenticated (PR:N). 📂 **Data**: Full read/write access to server files and database. 🌐 **Scope**: System-wide compromise (S:C).

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: Low. 🚫 **Auth Required**: None (PR:N). 🖱️ **User Interaction**: None (UI:N). 🌍 **Attack Vector**: Network (AV:N). 📉 **Complexity**: High (AC:H), but still critical.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🔓 **Public Exploit**: Yes. 📜 **PoC Available**: Nuclei template exists. 🔗 **Link**: [ProjectDiscovery Nuclei Templates](https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-58136.yaml).…

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Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for Yii 2 versions < 2.0.52. 🛠️ **Tool**: Use Nuclei with the specific CVE template. 📋 **Indicator**: Look for improper `__class` validation in JSON payloads.…

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Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. 📦 **Patch**: Upgrade to **Yii 2.0.52**. 🔗 **Official News**: [Yii Framework News 709](https://www.yiiframework.com/news/709/please-upgrade-to-yii-2-0-52).…

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Q9What if no patch? (Workaround)

🚧 **Workaround**: If unpatched, restrict JSON input validation. 🛡️ **Mitigation**: Implement strict allow-lists for `__class` keys. 🚫 **Block**: Prevent external instantiation of arbitrary PHP classes.…

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Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL. 🚨 **Priority**: Immediate patching required. ⏳ **Risk**: High due to RCE and lack of auth requirement. 📢 **Action**: Upgrade to 2.0.52 ASAP to prevent total compromise.

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Vulnerability detail Full AI analysis (login) yiiframework CWE-424