What is CVE-2026-104317?

CVE-2026-104317 is a high-severity vulnerability in IBM Langflow Oss, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-10-29.

How severe is CVE-2026-104317?

High severity. CVSS v3 base score is 8.1 out of 10.

Deserialization in IBM Langflow Oss

CVE-2026-104317

IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote attacker who could reach the message broker to execute arbitrary code on the system due to the deserialization of untrusted data.

Vulnerability class: Insecure Deserialization

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

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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-502 — Deserialization of Untrusted Data

References

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

Frequently asked questions

What is CVE-2026-104317?: CVE-2026-104317 is a high-severity vulnerability in IBM Langflow Oss, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-10-29.
How severe is CVE-2026-104317?: High severity. CVSS v3 base score is 8.1 out of 10.