{"schemaVersion":3,"id":"CVE-2026-55446","aliases":["GHSA-qwqc-p3q8-wcg9","PYSEC-2026-223"],"status":"published","duplicateOf":null,"title":null,"description":"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. 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