CVE-2026-76059 HIGH

CVE-2026-76059: Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

Vendor Ibm
Product Langflow OSS
Weakness CWE-693
Published September 10, 2026
Last update September 12, 2026

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

IBM Langflow OSS 1.0.0 through 1.11.5 An attacker who could submit custom component source code could bypass the static security scanner by crafting an annotated class-body assignment that resolved to a dangerous callable through alias tracking; the resolved value was never checked against the dangerous callable blocklist due to the logic error. If the crafted component reached the runtime execution path, the attacker could cause arbitrary operating system commands to execute on the server in-process, with the privileges of the running service.

Key dates

02Disclosure timeline

September 10, 2026 CVE published
September 12, 2026 Record updated