CVE-2026-9103CWE-306

Unauthenticated Superuser Token Issuance via Auto-Login Endpoint

Critical · published July 17, 2026

CVSS v3.1
9.8
EPSS
3%
Percentile
88.1
In the wild
Unconfirmed
What it is

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 tokens to be exposed to unintended origins, increasing the risk of unauthorized access.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.03208 · 88.1th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-07-17T18:49Z
EPSS history
Timeline
  • 17 JUL 18:49Z
    Unauthenticated Superuser Token Issuance via Auto-Login Endpoint
    cvelistv5