What’s Vulnerable › Vulnerabilities
CVE-2026-9103: Unauthenticated Superuser Token Issuance via Auto-Login Endpoint
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-07-17 · updated 2026-10-24
- Weakness: CWE-306
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 tokens to be exposed to unintended origins, increasing the risk of unauthorized access.
Affected products
- IBM Langflow OSS: from 1.0.0 before 1.10.1 — fixed in 1.10.1
How to fix
Upgrade to a fixed version: IBM Langflow OSS 1.10.1. Check the vendor advisory for mitigations.
References
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