CVE-2026-10134

CRITICAL

Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
https://www.ibm.com/support/pages/node/7277559

Scores

CVSS v3 10.0
EPSS 0.0031
EPSS Percentile 23.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-94
Status published
Products (2)
IBM/Langflow OSS 1.0.0 - 1.9.3
langflow/langflow 1.0.0 - 1.9.3
Published Jun 30, 2026
Tracked Since Jul 01, 2026