CVE-2026-9103 json
Unauthenticated Superuser Token Issuance via Auto-Login Endpoint
published 2026-07-17 3 mo ago modified 2026-10-24 15 d ago also EUVD-2026-45258
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.2%
- EPSS 3.2% chance of exploitation in 30 days, percentile 88%
- public exploits
- 0
- none known, plus a Nuclei check
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
3.21% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Langflow OSS - Superuser Token Issuance nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- IBM Langflow OSS
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
ibm.com
/support/pages/node/7278926
vendor-advisory, patch
Sources
- CVE List CVE-2026-9103
- NVD CVE-2026-9103
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