Arbitrary Code Execution Vulnerability in IBM Langflow OSS
CVE-2026-76059

8.8HIGH

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
10 September 2026

What is CVE-2026-76059?

IBM Langflow OSS versions 1.0.0 to 1.11.5 are vulnerable to an arbitrary code execution flaw. An attacker can submit specially crafted component source code that bypasses static security scanning. This is achieved by creating an annotated class-body assignment that leads to the invocation of a risky callable through alias tracking. Due to a logic flaw, the resolved callable is not validated against the established blocklist, which can potentially permit the execution of arbitrary operating system commands within the server's runtime, execute with the same privileges as the service in question.

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

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