CVE-2026-33484

Langflow is a tool for building and deploying AI-powered agents and workflows. In versions 1.0.0 through 1.8.1, the `/api/v1/files/images/{flow_id}/{file_name}` endpoint serves image files without any authentication or ownership check. Any unauthenticated request with a known flow_id and file_name returns the image with HTTP 200. In a multi-tenant deployment, any attacker who can discover or guess a `flow_id` (UUIDs can be leaked through other API responses) can download any user's uploaded images without credentials. Version 1.9.0 contains a patch.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security-advisories@github.com

Published

2026-03-24

Last modified

2026-03-24

Weaknesses

CWE-284, CWE-639, CWE-862

Affected products

• Langflow (Langflow)
• Langflow (Langflow-ai)

References

• https://github.com/langflow-ai/langflow/security/advisories/GHSA-7grx-3xcx-2xv5