API Credential Storage Weakness in Langflow by Langflow-AI
CVE-2026-6597

5.1MEDIUM

Key Information:

Vendor

Langflow-ai

Status
Langflow
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6597?

A vulnerability has been detected in Langflow, affecting versions up to 1.8.3, where the 'remove_api_keys' and 'has_api_terms' functions in the core.py file allow for improper storage of sensitive API credentials. This flaw enables attackers to exploit the application via remote methods, potentially leading to unauthorized access and data breaches. The vendor has been informed but has not acknowledged the issue publicly. Users are advised to implement security measures and monitor for potential exploitation.

Affected Version(s)

langflow 1.8.0

langflow 1.8.1

langflow 1.8.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-6597 - Proof of Concept

References

https://vuldb.com/vuln/358232
vdb-entrytechnical-description
https://vuldb.com/vuln/358232/cti
signaturepermissions-required
https://vuldb.com/submit/791920
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eric-d (VulDB User)
VulDB CNA Team
.