CVE-2026-28409 — AI Deep Analysis Summary

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

🚨 **Essence**: WeGIA OS Command Injection. 💥 **Consequences**: Attackers can execute arbitrary OS commands via malicious backup filenames during database restoration. Total system compromise is possible!

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-78 (OS Command Injection). 🐛 **Flaw**: Improper validation/sanitization of **backup file names** in the database restoration feature. User input is directly passed to system commands.

Q: Who is affected? (Versions/Components)

📦 **Affected**: WeGIA (Network Manager for welfare institutions). 📉 **Versions**: **< 3.6.5**. 🏢 **Vendor**: LabRedesCefetRJ (Nilson Lazarin).

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

👑 **Privileges**: Requires **Admin Access**. 💻 **Impact**: Full RCE (Remote Code Execution). Attackers gain control over the underlying OS, leading to data theft, modification, or destruction.

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

⚠️ **Threshold**: Medium. 📝 **Auth**: Requires **Administrative Privileges**. 🌐 **Network**: Remote (AV:N). 🚫 **UI**: None required (UI:N). Low complexity (AC:L).

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

🔍 **PoC**: Yes! Public Nuclei template available. 📂 **Link**: `projectdiscovery/nuclei-templates` (http/cves/2026/CVE-2026-28409.yaml). 🌍 **Wild Exp**: Not confirmed widespread, but PoC exists.

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

🩹 **Fix**: Upgrade to **WeGIA 3.6.5 or later**. 📢 **Advisory**: GHSA-5m5g-q2vv-rv3r on GitHub. ✅ **Status**: Patched in newer versions.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. 📅 **CVSS**: 9.8 (Critical). 🚀 **Action**: Patch immediately! Admin access makes it exploitable by insiders or compromised accounts. Don't wait!

Updated May 06, 2026 CVSS 10.0 · 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**: WeGIA OS Command Injection. 💥 **Consequences**: Attackers can execute arbitrary OS commands via malicious backup filenames during database restoration. Total system compromise is possible!

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-78 (OS Command Injection). 🐛 **Flaw**: Improper validation/sanitization of **backup file names** in the database restoration feature. User input is directly passed to system commands.

Q3Who is affected? (Versions/Components)

📦 **Affected**: WeGIA (Network Manager for welfare institutions). 📉 **Versions**: **< 3.6.5**. 🏢 **Vendor**: LabRedesCefetRJ (Nilson Lazarin).

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Requires **Admin Access**. 💻 **Impact**: Full RCE (Remote Code Execution). Attackers gain control over the underlying OS, leading to data theft, modification, or destruction.

Q5Is exploitation threshold high? (Auth/Config)

⚠️ **Threshold**: Medium. 📝 **Auth**: Requires **Administrative Privileges**. 🌐 **Network**: Remote (AV:N). 🚫 **UI**: None required (UI:N). Low complexity (AC:L).

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

🔍 **PoC**: Yes! Public Nuclei template available. 📂 **Link**: `projectdiscovery/nuclei-templates` (http/cves/2026/CVE-2026-28409.yaml). 🌍 **Wild Exp**: Not confirmed widespread, but PoC exists.

Q7How to self-check? (Features/Scanning)

🔎 **Self-Check**: Scan for WeGIA instances. 🧪 **Test**: Attempt database restoration with a crafted backup filename containing OS commands (e.g., `; cat /etc/passwd`).…

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Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Fix**: Upgrade to **WeGIA 3.6.5 or later**. 📢 **Advisory**: GHSA-5m5g-q2vv-rv3r on GitHub. ✅ **Status**: Patched in newer versions.

Q9What if no patch? (Workaround)

🚧 **Workaround**: If unpatched, **disable database restoration feature** if possible. 🛑 **Restrict Access**: Limit admin panel access to trusted IPs only.…

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Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. 📅 **CVSS**: 9.8 (Critical). 🚀 **Action**: Patch immediately! Admin access makes it exploitable by insiders or compromised accounts. Don't wait!

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Vulnerability detail Full AI analysis (login) LabRedesCefetRJ CWE-78