Q: Who is affected? (Versions/Components)

📦 **Affected**: **OpenCTI Platform** (Product: opencti). 📅 **Versions**: All versions **prior to 6.9.5**. 🏢 **Vendor**: OpenCTI-Platform.

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

🚫 **Public Exploit**: **None** currently available. 📂 **PoCs**: Empty list in data. 🌍 **Wild Exploitation**: No evidence of active exploitation in the wild yet.

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

✅ **Fixed**: **Yes**. 🔧 **Patch**: Upgrade to **OpenCTI 6.9.5** or later. 📌 **Reference**: GitHub Release 6.9.5 & GHSA-jv9r-jw2f-rhrf advisory.

Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: OpenCTI < 6.9.5 suffers from **Unsafe EJS Template Rendering**.
💥 **Consequences**: Attackers can execute **Arbitrary JavaScript** during notification processing.…

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: **CWE-1336** (Improper Control of Generation of Code).
🔍 **Flaw**: The `safeEjs.ts` file fails to properly sanitize/escape EJS templates.…

Question 3

Who is affected? (Versions/Components)

Accepted Answer

📦 **Affected**: **OpenCTI Platform** (Product: opencti).
📅 **Versions**: All versions **prior to 6.9.5**.
🏢 **Vendor**: OpenCTI-Platform.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

💀 **Capabilities**: Run **Arbitrary JavaScript**.
🔑 **Privileges**: Requires **Admin** capabilities (specifically custom notification templates).
📊 **Impact**: High (CVSS H).…

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

⚠️ **Threshold**: **Medium**.
🔐 **Auth**: Requires **High Privileges** (PR:H).
👁️ **UI**: No user interaction needed (UI:N).
🌐 **Network**: Network accessible (AV:N).…

Question 6

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

Accepted Answer

🚫 **Public Exploit**: **None** currently available.
📂 **PoCs**: Empty list in data.
🌍 **Wild Exploitation**: No evidence of active exploitation in the wild yet.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check**:
1. Check OpenCTI version: Is it **< 6.9.5**?
2. Audit **Notification Templates**: Look for custom EJS templates created by admins.
3.…

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

✅ **Fixed**: **Yes**.
🔧 **Patch**: Upgrade to **OpenCTI 6.9.5** or later.
📌 **Reference**: GitHub Release 6.9.5 & GHSA-jv9r-jw2f-rhrf advisory.

Question 9

What if no patch? (Workaround)

Accepted Answer

🛡️ **Workaround (No Patch)**:
1. **Restrict Access**: Limit who can create/edit notification templates.
2. **Disable Custom Templates**: If possible, disable the notification engine or custom EJS features.…

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

🔥 **Urgency**: **HIGH**.
📈 **Priority**: **Immediate Action**.
💡 **Reason**: CVSS Score is **High** (Critical impact on Confidentiality, Integrity, Availability).…

Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-39980 — 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)

Continue exploring