CVE-2026-33484

HIGH

Langflow has Unauthenticated IDOR on Image Downloads

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-33484 has a selected CVSS score of 7.5 (high).

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.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationPoC
AutomatableYes
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Mar 24, 2026 · Source: CVE List

Affected products and versions

2
ProductSourceVersion range

langflow

Browse langflow-ai / langflow
CVE List>= 1.0.0, < 1.9.0affected

langflow

Browse PyPI / langflow
GitHub Advisory1.0.0 to < 1.9.0 · Fixed in 1.9.0affected

References

4