CVE-2026-8470

High

Description

IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 use Python's non-cryptographic random module for generating Fernet encryption keys from user secrets under 32 characters. The deterministic Mersenne Twister PRNG produces identical keys for identical seeds, allowing attackers to reproduce encryption keys and decrypt stored API keys and authentication tokens.

SeverityHigh

CVSS7.4

Exploit probability—

Product

Langflow

PublishedAug 5, 2026

First seenAug 5, 2026

Weakness typeCWE-327CWE-327

How to fix

Update

langflow langflow1.11.0 or later

Patches

ibm.com/support/pages/node/7282648

Affected products

Product	Affected versions	Fixed in
langflow langflow	1.0.0 ≤ v < 1.11.0	1.11.0

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