CVE-2020-5410 — AI Deep Analysis Summary

Q: Who is affected? (Versions/Components)

📦 **Affected Versions**: • Spring Cloud Config **2.2.x** (before **2.2.3**) • Spring Cloud Config **2.1.x** (before **2.1.9**) • Older, unsupported versions. 🏢 **Vendor**: Spring by VMware.

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

✅ **Official Fix**: **YES**. Upgrade to: • **2.2.3** or later (for 2.2.x branch) • **2.1.9** or later (for 2.1.x branch). 📝 **Reference**: VMware Security Advisory confirms the patch.

Q: What if no patch? (Workaround)

🛑 **No Patch Workaround**: 1. Restrict network access to the Config Server (Firewall/WAF). 2. Disable the `spring-cloud-config-server` if not needed. 3. Implement strict URL validation at the reverse proxy level.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. Since PoCs are public and the impact is full file read, immediate patching is recommended. ⏳ **Priority**: Patch within 24-48 hours if exposed to the internet.

Updated May 06, 2026

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Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: A Path Traversal vulnerability in VMware Spring Cloud Config. 📉 **Consequences**: Attackers can read **arbitrary files** on the server, leading to potential data leaks and further system compromise.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-23 (Relative Path Traversal). The `spring-cloud-config-server` module fails to properly validate user-supplied URLs.…

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Q3Who is affected? (Versions/Components)

📦 **Affected Versions**: 
• Spring Cloud Config **2.2.x** (before **2.2.3**)
• Spring Cloud Config **2.1.x** (before **2.1.9**)
• Older, unsupported versions.
🏢 **Vendor**: Spring by VMware.

Q4What can hackers do? (Privileges/Data)

🕵️ **Attacker Capabilities**: Can view **any file** on the system accessible to the application process.…

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Q5Is exploitation threshold high? (Auth/Config)

⚡ **Exploitation Threshold**: **Low**. No authentication is strictly required for the traversal mechanism itself if the endpoint is exposed.…

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

🔓 **Public Exploits**: **YES**. Multiple PoCs are available on GitHub (e.g., `dead5nd/config-demo`, `osamahamad/CVE-2020-5410-POC`).…

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Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: 
Check your `pom.xml` or `build.gradle` for Spring Cloud Config versions.
Use Nuclei template `http/cves/2020/CVE-2020-5410.yaml`.
…

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Q8Is it fixed officially? (Patch/Mitigation)

✅ **Official Fix**: **YES**. Upgrade to:
• **2.2.3** or later (for 2.2.x branch)
• **2.1.9** or later (for 2.1.x branch).
📝 **Reference**: VMware Security Advisory confirms the patch.

Q9What if no patch? (Workaround)

🛑 **No Patch Workaround**: 
Restrict network access to the Config Server (Firewall/WAF).
Disable the `spring-cloud-config-server` if not needed.
Implement strict URL validation at the reverse proxy level.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. Since PoCs are public and the impact is full file read, immediate patching is recommended. ⏳ **Priority**: Patch within 24-48 hours if exposed to the internet.

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Vulnerability detail Full AI analysis (login) Spring by VMware CWE-23