Remote Code Execution Vulnerability in IBM Langflow OSS
CVE-2026-8481

9.9CRITICAL

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
17 July 2026

What is CVE-2026-8481?

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a significant vulnerability within the code validation API endpoint. The endpoint allows authenticated users to send user-supplied Python code which is executed directly through Python's exec() function, without any input validation or sandboxing measures. This oversight enables a malicious actor to execute arbitrary system commands with full privileges of the Langflow server process, potentially leading to severe system compromise.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.10.0

References

https://www.ibm.com/support/pages/node/7278923
vendor-advisorypatch

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kim SooHyun (im-soohyun)
.