CVE-2026-9202 | IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated… | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-9202
State: PUBLISHED
Assigner: ibm
Reserved: 2026-05-21 15:53 UTC
Published: 2026-07-17 17:33 UTC
Last updated: 2026-07-17 19:39 UTC
Primary CWE: CWE-306
CWE-306 Missing Authentication for Critical Function
Vendor / Product: IBM / Langflow OSS
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
IBM	Langflow OSS	—	1.0.0 ≤ 1.10.0

Weakness (CWE)

CWE	Source	Description
CWE-306	cna	CWE-306 Missing Authentication for Critical Function

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (1)

https://www.ibm.com/support/pages/node/7278929