Deserialization Vulnerability in IBM Langflow OSS Affects Remote Code Execution
CVE-2026-104317

8.1HIGH

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
29 October 2026

What is CVE-2026-104317?

IBM Langflow OSS versions 1.0.0 through 1.12.3 contain a vulnerability that permits remote attackers with access to the message broker to execute arbitrary code through the deserialization of untrusted data. This security flaw highlights the need for stringent data validation mechanisms to safeguard against unauthorized code execution. It is imperative for users of affected versions to implement the recommended patches from IBM to mitigate this risk.

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:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.