CVE-2026-21445

Langflow Missing Authentication on Critical API Endpoints

Published 2 Jan 2026Modified 17 Jun 2026CWE 306

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

GHSA8.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by GHSA (high).

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.

Affected packages and fixed versions

Source	Package	Fixed in
pip::GitHub Security Advisory pip	langflow, langflow-base	1.7.1 and 1 more

Show all 2 entries from 1 source

Source	Package	Fixed in
pip::GitHub Security Advisory pip	langflow	1.7.1
pip::GitHub Security Advisory pip	langflow-base	0.7.1

References

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