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.
References
| Link | Resource |
|---|---|
| https://github.com/langflow-ai/langflow/pull/3923 | Issue Tracking Patch |
| https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9 | Exploit Patch Vendor Advisory |
| https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9 | Exploit Patch Vendor Advisory |
Configurations
History
24 Jun 2026, 13:50
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/langflow-ai/langflow/pull/3923 - Issue Tracking, Patch | |
| References | () 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 - |
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
