CVE-2026-4503

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

Published Apr 30, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

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

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Langflow
Langflow langflow Desktop
CPEs cpe:2.3:a:langflow:langflow_desktop:*:*:*:*:*:*:*:*
Vendors & Products Langflow
Langflow langflow Desktop
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Unauthenticated Insecure Direct Object Reference (IDOR) Vulnerability in Langflow Desktop Image Download Endpoint
First Time appeared Ibm
Ibm langflow Desktop
Weaknesses CWE-639
CPEs cpe:2.3:a:ibm:langflow_desktop:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:langflow_desktop:1.8.4:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm langflow Desktop
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Jun 12, 2026, 6:09 PM
Reserved
Mar 20, 2026, 2:01 PM
Status
Analyzed
Published
Apr 30, 2026, 9:16 PM
Modified
Oct 26, 2026, 9:10 PM