CVE-2026-4503 PUBLISHED

Unauthenticated Insecure Direct Object Reference (IDOR) Vulnerability in Langflow Desktop Image Download Endpoint

Assigner: ibm
Reserved: 20.03.2026 Published: 30.04.2026 Updated: 30.04.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	IBM
Product	Langflow Desktop
Versions	affected from 1.0.0 to 1.8.4 (incl.)

Solutions

IBM recommends addressing the vulnerability now by upgrading to IBM Langflow Desktop 1.9.0 or newer https://www.langflow.org/blog/langflow-1-9-desktop If you are already using Langflow Desktop, upgrade in the application to version 1.9.0 To install Langflow Desktop for the first time, visit Langflow Desktop https://langflow.org/desktop . Download https://langflow.org/desktop

References

https://www.ibm.com/support/pages/node/7271099

Problem Types

CWE-639 Authorization Bypass Through User-Controlled Key CWE