Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: hackage-server suffers from a **Cross-Site Request Forgery (CSRF)** vulnerability.…

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: **CWE-352** (Missing CSRF Protection).…

Question 3

Who is affected? (Versions/Components)

Accepted Answer

📦 **Affected Component**: **hackage-server** (Haskell package repository server).
🌍 **Scope**: Any instance of hackage-server that does not implement proper CSRF mitigation mechanisms is at risk.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

🔓 **Attacker Capabilities**:
1. **Upload Packages**: Force users to push malicious code to the repository.
2. **Admin Actions**: Execute privileged operations without user consent.
3.…

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

⚠️ **Exploitation Threshold**: **Low to Medium**.
🔑 **Requirements**:
- **Network**: Remote (AV:N).
- **Auth**: None required for attacker (PR:N).…

Question 6

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

Accepted Answer

🧪 **Public Exploit**: **No specific PoC provided** in the data.
🌐 **Status**: Reference link exists (HSEC-2026-0002), but no public code exploit is listed.…

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check Method**:
1. Inspect HTTP requests for missing **CSRF tokens** in forms.
2. Verify if **Origin/Referer** headers are strictly validated.
3.…

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

🩹 **Official Fix**: **Yes**.
📅 **Published**: 2026-04-23.
🔗 **Reference**: See [HSEC-2026-0002](https://osv.dev/vulnerability/HSEC-2026-0002) for official patch details or mitigation guidance.

Question 9

What if no patch? (Workaround)

Accepted Answer

🛑 **No Patch Workaround**:
1. Implement **Samesite Cookie** attributes.
2. Add **CSRF Tokens** to all state-changing forms.
3. Validate **Origin** and **Referer** headers on the server side.

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

🔥 **Urgency**: **High**.
📊 **CVSS Score**: **8.1** (High).
💡 **Reason**: Remote exploitation with High Confidentiality/Integrity impact. Immediate mitigation is recommended to prevent repository tampering.

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CVE-2026-40471 — AI Deep Analysis Summary

Q1What is this vulnerability? (Essence + Consequences)

Q2Root Cause? (CWE/Flaw)

Q3Who is affected? (Versions/Components)

Q4What can hackers do? (Privileges/Data)

Q5Is exploitation threshold high? (Auth/Config)

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

Q7How to self-check? (Features/Scanning)

Q8Is it fixed officially? (Patch/Mitigation)

Q9What if no patch? (Workaround)

Q10Is it urgent? (Priority Suggestion)

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