CVE-2026-9103
Unauthenticated Superuser Token Issuance via Auto-Login Endpoint
- Published
- Jul 17, 2026
- Updated
- Jul 23, 2026
- Assigning CNA
- ibm
- Evidence observed
- Aug 28, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 85.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
3- CVE-2026-9198_exploitExploit
Unauthenticated RCE exploit for Langflow OSS chaining auto_login JWT bypass with validate/code exec() to achieve remote command execution and reverse shells.
- cve-2026-9198_exploitExploit
Exploit for CVE-2026-9198, containing proof-of-concept payloads and validation steps for assessing the vulnerability in target environments.
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