CVE-2026-9205
Received Received - Intake

Weak Cryptographic Key Derivation in IBM Langflow OSS

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: IBM Corporation

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

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-9205
EUVD
EUVD-2026-53547

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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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.

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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.

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.

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