CVE-2026-9205

Analyzed Analyzed - Analysis Complete

Weak Cryptographic Key Derivation in IBM Langflow OSS

Publication date: 2026-08-05

Last updated on: 2026-08-07

Assigner: IBM Corporation

Description

IBM Langflow OSS contains a weak cryptographic key derivation vulnerability in the ensure_fernet_key() function.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-05

Last Modified

2026-08-07

Generated

2026-08-16

AI Q&A

2026-08-05

EPSS Evaluated

2026-08-15

NVD

CVE-2026-9205

EUVD

EUVD-2026-53547

Affected Vendors & Products

Vendor	Product	Version / Range
langflow	langflow	From 1.0.0 (inc) to 1.11.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-338	The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.

Attack-Flow Graph

Executive Summary

IBM Langflow OSS has a weak cryptographic key derivation issue in the ensure_fernet_key() function. This means the function may generate cryptographic keys that are not sufficiently random or strong, potentially allowing unauthorized decryption of sensitive data.

Detection Guidance

The provided CVE data does not include specific detection methods or commands for CVE-2026-9205. Check IBM Langflow OSS logs for weak cryptographic key derivation warnings in the ensure_fernet_key() function. Review system configurations for improper key generation settings.

Impact Analysis

An attacker could exploit this to decrypt sensitive data if they gain access to encrypted communications or stored information. This may lead to data breaches, unauthorized access to confidential information, or compromise of system integrity.

Compliance Impact

This vulnerability could violate compliance requirements that mandate strong encryption for protecting sensitive data, such as GDPR or HIPAA. Non-compliance may result in legal penalties, fines, or reputational damage due to inadequate security measures.

Mitigation Strategies

Update IBM Langflow OSS to the latest version that patches the weak cryptographic key derivation in ensure_fernet_key(). Review and regenerate all Fernet keys used in the system to ensure strong cryptographic standards are applied.

Hi! I’m here to help you understand CVE-2026-9205. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70