What is CVE-2026-104316?

CVE-2026-104316 is a medium-severity vulnerability in IBM Langflow Oss, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-10-29.

How severe is CVE-2026-104316?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in IBM Langflow Oss

CVE-2026-104316

IBM Langflow OSS 1.0.0 through 1.12.3 could allow an authenticated attacker to cancel any victim's running background workflow job by sending a single HTTP request, resulting in loss of in-progress compute work with no flow-level permission check.

Published 2026-10-29 · last modified 2026-10-29.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Langflow Oss

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

www.ibm.com/support/pages/node/7293015 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-104316?: CVE-2026-104316 is a medium-severity vulnerability in IBM Langflow Oss, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-10-29.
How severe is CVE-2026-104316?: Medium severity. CVSS v3 base score is 6.5 out of 10.