Description
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.
Scores
CVSS v3
7.5
EPSS
0.0002
EPSS Percentile
4.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-284
CWE-639
CWE-862
Status
published
Products (3)
langflow/langflow
1.0.0 - 1.9.0
langflow-ai/langflow
>= 1.0.0, < 1.9.0
pypi/langflow
1.0.0PyPI
Published
Mar 24, 2026
Tracked Since
Mar 24, 2026