Authentication Bypass Vulnerability in Langflow Image Endpoint
CVE-2026-33484

7.5HIGH

Key Information:

Vendor

Langflow-ai

Status
Langflow
Vendor
CVE Published:
24 March 2026

What is CVE-2026-33484?

Langflow, a platform for creating AI-driven agents and workflows, has a security vulnerability in its /api/v1/files/images/{flow_id}/{file_name} endpoint. Versions 1.0.0 to 1.8.1 lack proper authentication and ownership checks, enabling attackers to access images uploaded by other users. By simply knowing a valid flow_id and file_name, an unauthorized user can download sensitive images, posing a significant risk to data privacy in multi-tenant environments. This issue has been addressed in version 1.9.0 with necessary patches to enhance security.

Affected Version(s)

langflow >= 1.0.0, < 1.9.0

References

https://github.com/langflow-ai/langflow/security/advisori...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.