Langflow Langflow — CVE-2026-8470 (Critical)

Date Aug 5, 2026

Type Vendor advisory

Signal Critical vendor advisory

Vendor / Product Langflow · Langflow

CVE CVE-2026-8470

Critical vendor advisory CVE-2026-8470

Summary

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.

Why it matters

This CVE carries a CRITICAL severity rating (CVSS 7.4) in Langflow Langflow. Patch or mitigate promptly. EPSS percentile: 1%.

Operator check

Review CVE-2026-8470 in your asset inventory. Apply patches per vendor guidance and verify Langflow is not exposed. CVSS score: 7.4. EPSS probability: 0.1%; percentile: 1%.

Sources

NVD — CVE-2026-8470 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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