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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| langflow-ai | langflow | < 1.7.0.dev45 | — |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Langflow - Broken Access Control http/cves/2026/CVE-2026-21445.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | langflow | < 1.7.1 | 1.7.1 | GHSA-c5cp-vx83-jhqx |
| PyPI | langflow-base | < 0.7.1 | 0.7.1 | GHSA-c5cp-vx83-jhqx |