CVE-2026-10547
Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-284 |
| Vendor | ibm |
| Product | langflow oss |
| Published | Aug 5, 2026 |
| Last Updated | Aug 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
IBM / Langflow OSS
1.0.0 ≤ 1.10.3
Credits
Sergio Cabrera (ddlxstudio) https://github.com/nekros1xx