CVE-2026-10134 CRITICAL

CVE-2026-10134: Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows

Vendor Ibm
Product Langflow OSS
Weakness CWE-94 · Code injection
Published June 30, 2026
Last update July 1, 2026

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.

Key dates

02Disclosure timeline

June 30, 2026 CVE published
July 1, 2026 Record updated