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 (documented deployment option), newly created accounts are immediately active and can authenticate to reach RCE endpoints, bypassing the need for AUTO_LOGIN.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7278929	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) IBM Langflow OSS 1.0.0 hasta 1.10.0 permite a atacantes no autenticados crear cuentas de usuario ilimitadas en cualquier instancia de Langflow; cuando NEW_USER_IS_ACTIVE=true (opción de despliegue documentada), las cuentas recién creadas están inmediatamente activas y pueden autenticarse para alcanzar puntos finales de RCE, eludiendo la necesidad de AUTO_LOGIN.

Information

Published : 2026-07-17 18:17

Updated : 2026-10-24 20:10

NVD link : CVE-2026-9202

Mitre link : CVE-2026-9202

CVE.ORG link : CVE-2026-9202

JSON object : View

Products Affected

langflow

langflow

CWE

CWE-306

Missing Authentication for Critical Function

{"id": "CVE-2026-9202", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9202", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-17T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@us.ibm.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "psirt@us.ibm.com", "affectedData": [{"cpes": ["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:langflow_oss:1.10.0:*:*:*:*:*:*:*"], "vendor": "IBM", "product": "Langflow OSS", "versions": [{"status": "affected", "version": "1.0.0", "versionType": "semver", "lessThanOrEqual": "1.10.0"}]}]}], "published": "2026-07-17T18:17:17.490", "references": [{"url": "https://www.ibm.com/support/pages/node/7278929", "tags": ["Vendor Advisory"], "source": "psirt@us.ibm.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "psirt@us.ibm.com", "description": [{"lang": "en", "value": "CWE-306"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "IBM Langflow OSS 1.0.0 hasta 1.10.0 permite a atacantes no autenticados crear cuentas de usuario ilimitadas en cualquier instancia de Langflow; cuando NEW_USER_IS_ACTIVE=true (opci\u00f3n de despliegue documentada), las cuentas reci\u00e9n creadas est\u00e1n inmediatamente activas y pueden autenticarse para alcanzar puntos finales de RCE, eludiendo la necesidad de AUTO_LOGIN."}], "lastModified": "2026-10-24T20:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A32785B1-3CF7-4BD0-B6F8-1AA77D4E565B", "versionEndExcluding": "1.10.1", "versionStartIncluding": "1.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@us.ibm.com"}