CVE-2026-9202: IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to create unlimited user accounts on any Langflow
Summary
IBM Langflow OSS (open-source software) versions 1.0.0 through 1.10.0 has a critical flaw that allows attackers without login credentials to create unlimited user accounts. When a specific deployment setting called NEW_USER_IS_ACTIVE is enabled, these newly created accounts become immediately usable and can access RCE endpoints (remote code execution, where an attacker can run commands on a system they don't own), completely bypassing security controls.
Vulnerability Details
9.8(critical)
EPSS: 0.0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
network
low
none
none
July 17, 2026
Classification
Taxonomy References
Affected Vendors
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-9202
First tracked: July 17, 2026 at 08:07 PM
Classified by LLM (prompt v3) · confidence: 95%