CVE-2026-21445 Details
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.
A vulnerability exists in Langflow prior to version 1.7.0.dev45, where multiple critical API endpoints lack proper authentication controls. This oversight allows any unauthenticated user to access sensitive user conversation data, transaction histories, and execute destructive actions such as deleting messages. The affected endpoints handle personal data and system operations that should require authorization.
Langflow version 1.7.0.dev45 has been patched to include authentication on the affected endpoints. Users should update to this version.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 6, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| langflow langflow | < 1.7.1 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 16, 2026 | Initial Analysis | [email protected] |
| Jan 2, 2026 | New CVE Received | [email protected] |