CVE-2021-39352 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: Insufficient validation of **imported file types** in `~/inc/CatchThemesDemoImport.php`. 📉 **CWE**: CWE-434 (Unrestricted Upload of File with Dangerous Type). The system trusts user input too much.

Q: Who is affected? (Versions/Components)

📦 **Affected Product**: Catch Themes Demo Import. 📉 **Versions**: **1.7 and below**. 🏢 **Vendor**: Catch Themes. ⚠️ Any WordPress site using this plugin version is at risk.

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

🔐 **Threshold**: **Medium**. 👤 **Requirement**: Attacker must have **Admin privileges** (PR:H). 🌐 **Network**: Network accessible (AV:N). 🚫 **User Interaction**: None required (UI:N).

Q: Is there a public Exp? (PoC/Wild Exploitation)

💣 **Public Exploit**: **YES**. 🔗 **Sources**: Exploit-DB (50580), Packet Storm. 🔍 **Status**: Active PoCs exist. Wild exploitation is possible if admin creds are leaked or brute-forced.

Q: Is it fixed officially? (Patch/Mitigation)

🛠️ **Official Fix**: **YES**. 📅 **Patch Date**: Published around Oct 2021. ✅ **Solution**: Update plugin to **version > 1.7**. 🔗 **Ref**: WordPress Trac changeset 2617555 fixed the validation logic.

Q: Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **HIGH**. 🎯 **Priority**: **P1**. 📉 **CVSS**: 9.8 (Critical). 💡 **Action**: Patch immediately. Even with admin requirement, admin accounts are frequently targeted. Do not ignore.

Updated May 08, 2026 CVSS 7.2 · High

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Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Catch Themes Demo Import plugin has a **Code Issue** (CWE-434). <br>🔥 **Consequences**: Weak file type validation allows **Remote Code Execution (RCE)**.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: Insufficient validation of **imported file types** in `~/inc/CatchThemesDemoImport.php`. <br>📉 **CWE**: CWE-434 (Unrestricted Upload of File with Dangerous Type). The system trusts user input too much.

Q3Who is affected? (Versions/Components)

📦 **Affected Product**: Catch Themes Demo Import. <br>📉 **Versions**: **1.7 and below**. <br>🏢 **Vendor**: Catch Themes. <br>⚠️ Any WordPress site using this plugin version is at risk.

Q4What can hackers do? (Privileges/Data)

💀 **Attacker Action**: Upload a **malicious file** (e.g., web shell). <br>🔓 **Privileges**: Requires **Admin privileges**. <br>📊 **Impact**: High. Full **Remote Code Execution** possible.…

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Q5Is exploitation threshold high? (Auth/Config)

🔐 **Threshold**: **Medium**. <br>👤 **Requirement**: Attacker must have **Admin privileges** (PR:H). <br>🌐 **Network**: Network accessible (AV:N). <br>🚫 **User Interaction**: None required (UI:N).

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

💣 **Public Exploit**: **YES**. <br>🔗 **Sources**: Exploit-DB (50580), Packet Storm. <br>🔍 **Status**: Active PoCs exist. Wild exploitation is possible if admin creds are leaked or brute-forced.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1. Check WordPress Plugins list for **Catch Themes Demo Import**. <br>2. Verify version is **≤ 1.7**. <br>3. Scan for `CatchThemesDemoImport.php` in `wp-content/plugins/`. <br>4.…

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Q8Is it fixed officially? (Patch/Mitigation)

🛠️ **Official Fix**: **YES**. <br>📅 **Patch Date**: Published around Oct 2021. <br>✅ **Solution**: Update plugin to **version > 1.7**. <br>🔗 **Ref**: WordPress Trac changeset 2617555 fixed the validation logic.

Q9What if no patch? (Workaround)

🚧 **No Patch Workaround**: <br>1. **Deactivate** the plugin immediately. <br>2. **Delete** the plugin folder if not needed. <br>3. Restrict **Admin access** via IP whitelisting. <br>4.…

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Q10Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **HIGH**. <br>🎯 **Priority**: **P1**. <br>📉 **CVSS**: 9.8 (Critical). <br>💡 **Action**: Patch immediately. Even with admin requirement, admin accounts are frequently targeted. Do not ignore.

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Vulnerability detail Full AI analysis (login) Catch Themes Demo Import CWE-434