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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

History

24 Jun 2026, 13:50

Type Values Removed Values Added
References () https://github.com/langflow-ai/langflow/pull/3923 - () https://github.com/langflow-ai/langflow/pull/3923 - Issue Tracking, Patch
References () https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9 - () https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9 - Exploit, Patch, Vendor Advisory
CPE cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
First Time Langflow langflow
Langflow

23 Jun 2026, 18:18

Type Values Removed Values Added
References () https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9 - () https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9 -

23 Jun 2026, 17:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-06-23 17:17

Updated : 2026-06-24 13:50


NVD link : CVE-2026-55446

Mitre link : CVE-2026-55446

CVE.ORG link : CVE-2026-55446


JSON object : View

Products Affected

langflow

  • langflow
CWE
CWE-400

Uncontrolled Resource Consumption