CVE-2026-21445

CRITICAL

9.1

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization. Version 1.7.0.dev45 contains a patch.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/2/2026

Last Modified1/16/2026

Sourcenvd

Honeypot Sightings0

Affected Products

langflow:langflow

Weaknesses (CWE)

CWE-306

References

https://github.com/langflow-ai/langflow/commit/3fed9fe1b5658f2c8656dbd73508e113a96e486a(security-advisories@github.com)

https://github.com/langflow-ai/langflow/security/advisories/GHSA-c5cp-vx83-jhqx(security-advisories@github.com)

IOC Correlations

No correlations recorded

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