Remote Code Execution Vulnerability in IBM Langflow OSS Products
CVE-2026-18894

6.5MEDIUM

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
29 October 2026

What is CVE-2026-18894?

IBM Langflow OSS versions 1.0.0 to 1.12.4 have a vulnerability that may allow an attacker to execute previously stored Python component code from a public workflow. The flaw permits the execution to occur under the flow owner's runtime context, thus circumventing designated trust boundaries intended to restrict execution paths to only server-trusted components. This poses a significant risk for users relying on public workflows within the application.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.12.4

References

https://www.ibm.com/support/pages/node/7293016
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.