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

🩹 **Official Fix**: **YES**. 📅 **Patch**: Released in **Langflow 1.8.0**. 🔗 **Commit**: `d8c6480daa17b2f2af0b5470cdf5c3d28dc9e508`. 📢 **Advisory**: GHSA-3645-fxcv-hqr4 confirms the fix.

Q: Is it urgent? (Priority Suggestion)

🔴 **Urgency**: **CRITICAL**. ⏱️ **Priority**: **IMMEDIATE ACTION**. 📉 **Risk**: CVSS 9.8 (Critical). 🚀 **Action**: Upgrade to **v1.8.0+** immediately. Do not wait.

Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: Langflow (pre-1.8.0) has a critical flaw in the **CSV Agent** node. It hardcodes `allow_dangerous_code=True`.
💥 **Consequences**: This allows **Remote Code Execution (RCE)**.…

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: **CWE-94** (Code Injection).
🔍 **Flaw**: The developer explicitly enabled dangerous code execution in the CSV Agent node. It’s a hardcoded configuration error, not a logic bug.…

Question 3

Who is affected? (Versions/Components)

Accepted Answer

📦 **Affected**: **Langflow** versions **before 1.8.0**.
🏢 **Vendor**: `langflow-ai`.
🔧 **Component**: Specifically the **CSV Agent** node used in building Multi-Agent and RAG apps.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

🕵️ **Hackers' Power**: Full **RCE**.
📂 **Data**: They can read, modify, or delete any data accessible to the Langflow process.
🔑 **Privileges**: They gain the same privileges as the Langflow service user.…

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

⚠️ **Threshold**: **LOW**.
🔓 **Auth**: `PR:N` (No Privileges Required).
🌐 **Network**: `AV:N` (Network Accessible).
👤 **UI**: `UI:N` (No User Interaction).…

Question 6

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

Accepted Answer

💣 **Public Exp?**: **YES**.
📄 **PoC**: Available on GitHub (Threekiii/Awesome-POC).
🔥 **Status**: Wild exploitation is likely given the low barrier to entry and public proof-of-concept.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check**:
1. Check your Langflow version. Is it **< 1.8.0**?
2. Do you use the **CSV Agent** node?
3. Scan for the hardcoded `allow_dangerous_code=True` in the source code of that node.
4.…

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

🩹 **Official Fix**: **YES**.
📅 **Patch**: Released in **Langflow 1.8.0**.
🔗 **Commit**: `d8c6480daa17b2f2af0b5470cdf5c3d28dc9e508`.
📢 **Advisory**: GHSA-3645-fxcv-hqr4 confirms the fix.

Question 9

What if no patch? (Workaround)

Accepted Answer

🚧 **No Patch? Workaround**:
1. **Disable** the CSV Agent node if not strictly needed.
2. **Isolate** the Langflow instance (network segmentation).
3. **Monitor** logs for suspicious code execution attempts.…

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

🔴 **Urgency**: **CRITICAL**.
⏱️ **Priority**: **IMMEDIATE ACTION**.
📉 **Risk**: CVSS 9.8 (Critical).
🚀 **Action**: Upgrade to **v1.8.0+** immediately. Do not wait.

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CVE-2026-27966 — 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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