Unauthorized Workflow Manipulation in IBM Langflow
CVE-2026-104316

6.5MEDIUM

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
29 October 2026

What is CVE-2026-104316?

IBM Langflow OSS versions 1.0.0 through 1.12.3 contain a vulnerability that enables an authenticated attacker to cancel any active background workflow job. This is achieved via a single HTTP request without appropriate flow-level permission checks, potentially resulting in significant loss of in-progress computational tasks.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.12.3

References

https://www.ibm.com/support/pages/node/7293015
vendor-advisorypatch

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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