wid-sec-w-2026-0823
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Published 2026-03-22
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View on BSI CERT-Bund ↗
Langflow: Multiple Vulnerabilities
CVSS 9.1
CRITICAL
Risk Summary
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.
CVEs (3)
Affected Vendors
Open Source
Affected Products (4)
Open Source
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Langflow
<1.7.0
Open Source
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Langflow
1.7.0
Open Source
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Langflow
<1.9.0
Open Source
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Langflow
1.9.0
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