Remote Code Execution Vulnerability in IBM Langflow OSS
CVE-2026-81211

8.8HIGH

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
10 September 2026

What is CVE-2026-81211?

IBM Langflow OSS versions 1.0.0 through 1.11.5 are susceptible to a remote code execution vulnerability that arises from the improper authorization of custom components within stored flows. This flaw enables an authenticated attacker to leverage the system to execute arbitrary Python code, potentially leading to unauthorized access and compromise of sensitive data. It is crucial for users to apply the necessary patches provided by IBM to mitigate this security risk.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.11.5

References

https://www.ibm.com/support/pages/node/7286666
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.