CVE-2025-30220 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🔍 **Root Cause**: **CWE-611** (Improper Restriction of XML External Entity Reference). ⚠️ **Flaw**: The GeoTools library fails to properly sanitize XML inputs, allowing malicious entities to be processed. 🛑

Q: Who is affected? (Versions/Components)

🏢 **Affected**: **GeoServer** (Java-based open-source server). 📦 **Components**: Specifically impacts the **Web Feature Service (WFS)** module and underlying **GeoTools** library. 🌍

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

🕵️ **Attacker Actions**: 1. **Read Local Files**: Exfiltrate sensitive server data via OOB channels. 2. **SSRF**: Forge requests to internal networks. 3. **Info Leak**: Reveal internal system structures. 📂

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

🔓 **Threshold**: **LOW**. 🚫 **Auth**: No authentication required (`PR:N`). 🎯 **Complexity**: Low (`AC:L`). 🖱️ **User Interaction**: None (`UI:N`). Easy to exploit remotely! 🚀

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

🔎 **Self-Check**: 1. Scan for **GeoServer WFS** endpoints. 2. Use **Nuclei** with the specific CVE template. 3. Check for XML parsing errors in WFS requests. 🛠️

Q: What if no patch? (Workaround)

🚧 **No Patch? Workaround**: 1. Disable **WFS** if not needed. 2. Configure XML parser to **disallow external entities** strictly. 3. Restrict network access to GeoServer ports. 🧱

Q: Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **HIGH**. 🔴 **Priority**: Critical. 📉 **CVSS**: High impact on Confidentiality (`C:H`). 🏃 **Action**: Patch immediately! Remote, unauthenticated, and exploitable. 🚨

Updated May 06, 2026 CVSS 9.9 · 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**: GeoServer suffers from an **XML External Entity (XXE)** vulnerability due to improper XML processing.…

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Q2Root Cause? (CWE/Flaw)

🔍 **Root Cause**: **CWE-611** (Improper Restriction of XML External Entity Reference). <br>⚠️ **Flaw**: The GeoTools library fails to properly sanitize XML inputs, allowing malicious entities to be processed. 🛑

Q3Who is affected? (Versions/Components)

🏢 **Affected**: **GeoServer** (Java-based open-source server). <br>📦 **Components**: Specifically impacts the **Web Feature Service (WFS)** module and underlying **GeoTools** library. 🌍

Q4What can hackers do? (Privileges/Data)

🕵️ **Attacker Actions**: <br>1. **Read Local Files**: Exfiltrate sensitive server data via OOB channels. <br>2. **SSRF**: Forge requests to internal networks. <br>3. **Info Leak**: Reveal internal system structures. 📂

Q5Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **LOW**. <br>🚫 **Auth**: No authentication required (`PR:N`). <br>🎯 **Complexity**: Low (`AC:L`). <br>🖱️ **User Interaction**: None (`UI:N`). Easy to exploit remotely! 🚀

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

💻 **Public Exp?**: **YES**. <br>📄 **PoC Available**: Proof-of-concept templates exist in **ProjectDiscovery Nuclei** (`CVE-2025-30220.yaml`).…

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Q7How to self-check? (Features/Scanning)

🔎 **Self-Check**: <br>1. Scan for **GeoServer WFS** endpoints. <br>2. Use **Nuclei** with the specific CVE template. <br>3. Check for XML parsing errors in WFS requests. 🛠️

Q8Is it fixed officially? (Patch/Mitigation)

🛡️ **Official Fix**: **YES**. <br>📝 **References**: See **GeoNetwork/GeoTools** security advisories (GHSA-826p-4gcg-35vw). <br>🔧 **Action**: Update GeoServer/GeoTools to patched versions.…

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Q9What if no patch? (Workaround)

🚧 **No Patch? Workaround**: <br>1. Disable **WFS** if not needed. <br>2. Configure XML parser to **disallow external entities** strictly. <br>3. Restrict network access to GeoServer ports. 🧱

Q10Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **HIGH**. <br>🔴 **Priority**: Critical. <br>📉 **CVSS**: High impact on Confidentiality (`C:H`). <br>🏃 **Action**: Patch immediately! Remote, unauthenticated, and exploitable. 🚨

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Vulnerability detail Full AI analysis (login) geoserver CWE-611