CVE-2026-10547

HighCVSS 8.1/10Last modified Oct 23, 2026

Description

IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST /api/v1/build/{flow_id}/vertices endpoint, allowing an authenticated user to inject arbitrary graph data into a shared cache for any flow. This may result in cross-user cache pollution, unauthorized workflow execution, or denial of service.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Weakness enumeration

CWE-284

Affected software

Vendor	Product	Versions
IBM	Langflow OSS	>= 1.0.0, <= 1.10.3

References

https://www.ibm.com/support/pages/node/7282647Vendor Advisory

Timeline

Published: Aug 5, 2026
Last modified: Oct 23, 2026
NVD status: Analyzed

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