CVE-2026-7663

IBM Langflow OSS 1.0.0 through 1.9.6 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7277570	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

02 Jul 2026, 18:19

Type	Values Removed	Values Added
CWE		CWE-863
References	~~() https://www.ibm.com/support/pages/node/7277570 -~~	() https://www.ibm.com/support/pages/node/7277570 - Vendor Advisory
First Time		Langflow langflow Langflow
CPE		cpe:2.3:a:langflow:langflow::::::::

30 Jun 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-30 20:17

Updated : 2026-07-02 18:19

NVD link : CVE-2026-7663

Mitre link : CVE-2026-7663

CVE.ORG link : CVE-2026-7663

JSON object : View

Products Affected

langflow

langflow

CWE

CWE-285

Improper Authorization

CWE-863

Incorrect Authorization

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