CVE-2026-18894

CriticalCVSS 9.8/10Last modified Oct 30, 2026

Description

IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to trigger pre-existing stored Python component code in a public workflow, executing it under the flow owner's runtime context within the server process. This bypasses the intended trust boundary where public execution paths are restricted to server-trusted component code.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-94

Affected software

Vendor	Product	Versions
IBM	Langflow OSS	>= 1.0.0, <= 1.12.4

References

https://www.ibm.com/support/pages/node/7293016Patch, Vendor Advisory

Timeline

Published: Oct 29, 2026
Last modified: Oct 30, 2026
NVD status: Analyzed

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