Remote Code Execution Vulnerability in IBM Langflow OSS by IBM
CVE-2026-9198

9.8CRITICAL

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
17 July 2026

What is CVE-2026-9198?

The vulnerability in IBM Langflow OSS versions 1.0.0 through 1.10.0 allows unauthenticated attackers to chain two API endpoints. This exploitation can occur via the /api/v1/auto_login endpoint, which generates SUPERUSER tokens for any caller, in conjunction with the /api/v1/validate/code endpoint that introduces the capability to execute arbitrary user code through exec(). This results in full Remote Code Execution on default installations of Langflow, posing significant risks to system security.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.10.0

References

https://www.ibm.com/support/pages/node/7278927
vendor-advisorypatch

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.