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CVE-2026-55446

Langflow: Unauthenticated DoS through multipart form boundary file upload PUBLISHED

Description (CNA)

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.0.19, an attacker can send a /api/v1/files/upload/ request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time. This vulnerability is fixed in 1.0.19.

Affected (CNA)

Vendor / productVersions
langflow-ai / langflowaffected < 1.0.19

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.