CVE-2019-25296 — AI Deep Analysis Summary

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

🚨 **Essence**: Arbitrary File Upload & Delete via AJAX flaws. 💥 **Consequences**: Full server compromise, data theft, site defacement. Critical integrity loss.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-434** (Unrestricted File Upload). ❌ **Flaw**: Missing file type validation in `lfb_upload_form` & `lfb_removeFile` AJAX endpoints.

Q: Who is affected? (Versions/Components)

🏢 **Vendor**: Loopus. 📦 **Product**: WP Cost Estimation & Payment Forms Builder. 📉 **Affected**: Versions **9.642 and earlier**.

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

🕵️ **Hackers Can**: Upload malicious PHP shells. Delete critical files. 🔓 **Privileges**: Full control over server files. High impact on Confidentiality, Integrity, Availability.

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

⚡ **Threshold**: **LOW**. 🔑 **Auth**: None required (PR:N). 🌐 **Access**: Network accessible (AV:N). Easy remote exploitation.

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

🔥 **Exploitation**: **YES**. 🌍 **Wild Exploit**: Confirmed active exploitation in the wild (ZDNet/Wordfence reports). PoCs likely circulating.

Q: How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for WP Cost Estimation plugin. 📡 **Features**: Check AJAX endpoints for missing MIME/type validation. Use vulnerability scanners (Acunetix/WPScan).

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

🛠️ **Fix**: **YES**. 📝 **Patch**: Update to version **>9.642**. Official patches released by vendor (Wordfence blog confirms).

Q: What if no patch? (Workaround)

🚧 **Workaround**: Disable the plugin if not used. 🚫 **Mitigation**: Block AJAX endpoints via WAF. Restrict file upload types at server level (Apache/Nginx).

Q: Is it urgent? (Priority Suggestion)

🚨 **Urgency**: **CRITICAL**. ⏱️ **Priority**: Patch **IMMEDIATELY**. CVSS 9.8 (High). Active exploitation detected. Do not delay.

Updated May 06, 2026 CVSS 9.8 · 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**: Arbitrary File Upload & Delete via AJAX flaws. <br>💥 **Consequences**: Full server compromise, data theft, site defacement. Critical integrity loss.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-434** (Unrestricted File Upload). <br>❌ **Flaw**: Missing file type validation in `lfb_upload_form` & `lfb_removeFile` AJAX endpoints.

Q3Who is affected? (Versions/Components)

🏢 **Vendor**: Loopus. <br>📦 **Product**: WP Cost Estimation & Payment Forms Builder. <br>📉 **Affected**: Versions **9.642 and earlier**.

Q4What can hackers do? (Privileges/Data)

🕵️ **Hackers Can**: Upload malicious PHP shells. Delete critical files. <br>🔓 **Privileges**: Full control over server files. High impact on Confidentiality, Integrity, Availability.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: **LOW**. <br>🔑 **Auth**: None required (PR:N). <br>🌐 **Access**: Network accessible (AV:N). Easy remote exploitation.

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

🔥 **Exploitation**: **YES**. <br>🌍 **Wild Exploit**: Confirmed active exploitation in the wild (ZDNet/Wordfence reports). PoCs likely circulating.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for WP Cost Estimation plugin. <br>📡 **Features**: Check AJAX endpoints for missing MIME/type validation. Use vulnerability scanners (Acunetix/WPScan).

Q8Is it fixed officially? (Patch/Mitigation)

🛠️ **Fix**: **YES**. <br>📝 **Patch**: Update to version **>9.642**. Official patches released by vendor (Wordfence blog confirms).

Q9What if no patch? (Workaround)

🚧 **Workaround**: Disable the plugin if not used. <br>🚫 **Mitigation**: Block AJAX endpoints via WAF. Restrict file upload types at server level (Apache/Nginx).

Q10Is it urgent? (Priority Suggestion)

🚨 **Urgency**: **CRITICAL**. <br>⏱️ **Priority**: Patch **IMMEDIATELY**. CVSS 9.8 (High). Active exploitation detected. Do not delay.

Continue exploring

Vulnerability detail Full AI analysis (login) loopus CWE-434