What is CVE-2026-9103?

CVE-2026-9103 is a critical-severity vulnerability in Ibm Langflow Oss, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-17.

How severe is CVE-2026-9103?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Ibm Langflow Oss

CVE-2026-9103

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 requiri…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Langflow Oss — versions 1.0.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-9103?: CVE-2026-9103 is a critical-severity vulnerability in Ibm Langflow Oss, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-17.
How severe is CVE-2026-9103?: Critical severity. CVSS v3 base score is 9.8 out of 10.