What is CVE-2026-19875?

CVE-2026-19875 is a high-severity vulnerability in IBM Langflow Oss, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-08-19.

How severe is CVE-2026-19875?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in IBM Langflow Oss

CVE-2026-19875

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to overwrite administrator email information and abuse the server as an outbound relay due to missing authentication for the registration endpoint.

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Ibm Langflow Oss

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

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

Frequently asked questions

What is CVE-2026-19875?: CVE-2026-19875 is a high-severity vulnerability in IBM Langflow Oss, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-08-19.
How severe is CVE-2026-19875?: High severity. CVSS v3 base score is 7.5 out of 10.