What is CVE-2026-3357?

CVE-2026-3357 is a high-severity vulnerability in Ibm Langflow Desktop, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-04-08.

How severe is CVE-2026-3357?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in Ibm Langflow Desktop

CVE-2026-3357

IBM Langflow Desktop 1.6.0 through 1.8.2 Langflow could allow an authenticated user to execute arbitrary code on the system, caused by an insecure default setting which permits the deserialization of untrusted data in the FAISS component.

Vulnerability class: Insecure Deserialization

EPSS: 0.006 (70.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Langflow Desktop — versions 1.6.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

www.ibm.com/support/pages/node/7268428 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-3357?: CVE-2026-3357 is a high-severity vulnerability in Ibm Langflow Desktop, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-04-08.
How severe is CVE-2026-3357?: High severity. CVSS v3 base score is 8.8 out of 10.