CVE-2026-9202: IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to create unlimited user accounts on any Langflow instance; when NEW_USER_IS_ACTIVE=true…

PriorityP259critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.50%

42.0th percentile

IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to create unlimited user accounts on any Langflow instance; when NEW_USER_IS_ACTIVE=true (documented deployment option), newly created accounts are immediately active and can authenticate to reach RCE endpoints, bypassing the need for AUTO_LOGIN.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
ibm	langflow_oss	1.0.0 – 1.10.0	—
langflow	langflow	>= 1.0.0 < 1.10.1	1.10.1

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