What is CVE-2026-4503?

CVE-2026-4503 is a high-severity vulnerability in Ibm Langflow Desktop, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-04-30.

How severe is CVE-2026-4503?

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

Auth bypass in Ibm Langflow Desktop

CVE-2026-4503

IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow could allow an unauthenticated user to view other users' images due to an indirect object reference through a user-controlled key.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (8.3th percentile) — read the EPSS interpretation.

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.

Affected products

Ibm Langflow Desktop — versions 1.0.0
Langflow Langflow_desktop

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

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

Frequently asked questions

What is CVE-2026-4503?: CVE-2026-4503 is a high-severity vulnerability in Ibm Langflow Desktop, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-04-30.
How severe is CVE-2026-4503?: High severity. CVSS v3 base score is 7.5 out of 10.