Vulnerability Details CVE-2026-55446
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.
Exploit prediction scoring system (EPSS) score
CVSS Severity
CVSS v3 Score 7.5