CRITICAL

CVE-2026-9103

Unauthenticated Superuser Token Issuance via Auto-Login Endpoint

CVSS v3

9.8

CRITICAL

EPSS Score

3.2 %

exploit probability, as of 2026-09-25

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to gain unauthorized access due to improper authentication in the /api/v1/login/auto_login endpoint. The endpoint issues long-lived superuser bearer tokens without requiring authentication when the AUTO_LOGIN configuration is enabled (enabled by default), which may allow an unauthenticated network attacker to obtain full administrative access. Additionally, permissive cross-origin resource sharing (CORS) settings may allow token

Technical details

Published: 2026-07-17
Last Modified: 2026-07-17

Frequently asked questions

What is CVE-2026-9103?

Is CVE-2026-9103 actively exploited?

Active exploitation of CVE-2026-9103 has not been confirmed. Its EPSS score was 3.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-9103?

CVE-2026-9103 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2026-9103 affecting your environment?

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