CVE-2026-13445

IBM Langflow OSS 1.0.0 through 1.10.1 can allow an authenticated attacker to exploit the SaveToFile component to read and modify another user's uploaded files by specifying absolute paths pointing to victim storage locations. In append mode, the attacker's workflow reads victim file contents, appends attacker-controlled data, and uploads a copy containing victim data to the attacker's namespace (confidentiality breach). In overwrite mode, the attacker can replace victim file contents with arbitrary data (integrity breach). This breaks the storage ownership boundary between users.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7279990	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

20 Jul 2026, 17:53

Type	Values Removed	Values Added
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:-:::::::*
References	~~() https://www.ibm.com/support/pages/node/7279990 -~~	() https://www.ibm.com/support/pages/node/7279990 - Vendor Advisory
First Time		Apple macos Langflow langflow Linux Apple Linux linux Kernel Microsoft windows Microsoft Langflow

17 Jul 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-17 21:17

Updated : 2026-07-20 19:17

NVD link : CVE-2026-13445

Mitre link : CVE-2026-13445

CVE.ORG link : CVE-2026-13445

JSON object : View

Products Affected

langflow

langflow

microsoft

windows

apple

macos

linux

linux_kernel

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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