CVE-2026-21445 | THREATINT

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.

PUBLISHED Reserved 2025-12-29 | Published 2026-01-02 | Updated 2026-01-06 | Assigner GitHub_M

HIGH: 8.8CVSS: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

Problem types

CWE-306: Missing Authentication for Critical Function

Product status

< 1.7.0.dev45

affected

References

github.com/...ngflow/security/advisories/GHSA-c5cp-vx83-jhqx

github.com/...ommit/3fed9fe1b5658f2c8656dbd73508e113a96e486a

cve.org (CVE-2026-21445)

nvd.nist.gov (CVE-2026-21445)

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