CVE-2026-13448

IBM Langflow OSS 1.0.0 through 1.10.1 Lanflow OSS contains an unauthenticated remote code execution vulnerability in the public flow build endpoint ( /api/v1/build_public_tmp/{flow_id}/flow ). The vulnerability stems from an incomplete denylist in the validate_public_flow_no_code_execution() function that fails to block several code-execution agent components including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7279997	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

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

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:linux:linux_kernel:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

History

21 Jul 2026, 17:17

Type	Values Removed	Values Added
CWE		CWE-184

20 Jul 2026, 18:16

Type	Values Removed	Values Added
References	~~() https://www.ibm.com/support/pages/node/7279997 -~~	() https://www.ibm.com/support/pages/node/7279997 - Vendor Advisory
CPE		cpe:2.3:o:microsoft:windows:-:::::::* cpe:2.3:a:langflow:langflow:::::::: cpe:2.3:o:apple:macos:-:::::::* cpe:2.3:o:linux:linux_kernel:-:::::::*
First Time		Apple macos Langflow langflow Linux Apple Linux linux Kernel Microsoft windows Microsoft Langflow
CWE		NVD-CWE-noinfo

17 Jul 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-17 20:17

Updated : 2026-07-21 17:17

NVD link : CVE-2026-13448

Mitre link : CVE-2026-13448

CVE.ORG link : CVE-2026-13448

JSON object : View

Products Affected

langflow

langflow

microsoft

windows

apple

macos

linux

linux_kernel

CWE

NVD-CWE-noinfo CWE-184

Incomplete List of Disallowed Inputs

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