Unrated severityNVD Advisory· Published Aug 5, 2026· Updated Aug 5, 2026
Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
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.
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Affected products
1- Range: 1.0.0 - 1.10.3
Patches
Vulnerability mechanics
References
1- www.ibm.com/support/pages/node/7282647mitrevendor-advisorypatch
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