Is CVE-2026-10547 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-10547?

CVE-2026-10547 has a CVSS v3 severity of MEDIUM (5.9).

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CVE-2026-10547

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.