What is CVE-2026-19300?

CVE-2026-19300 is a high-severity vulnerability in IBM Langflow Oss, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-09-04.

How severe is CVE-2026-19300?

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

Information disclosure in IBM Langflow Oss

CVE-2026-19300

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote attacker to obtain sensitive information due to incomplete scrubbing of sensitive credential fields.

Vulnerability class: Information Disclosure

Published 2026-09-04 · last modified 2026-09-08.

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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.ibm.com/support/pages/node/7285642 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-19300?: CVE-2026-19300 is a high-severity vulnerability in IBM Langflow Oss, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-09-04.
How severe is CVE-2026-19300?: High severity. CVSS v3 base score is 7.5 out of 10.