CVE-2026-3345

Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint

Published Apr 30, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

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-1-8-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 Download Langflow Desktop https://langflow.org/desktop .

Tracking

Sign in to view the affected projects.

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': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.
Title Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint
First Time appeared Ibm
Ibm langflow Desktop
Weaknesses CWE-22
CPEs cpe:2.3:a:ibm:langflow_desktop:1.8.4:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm langflow Desktop
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
May 27, 2026, 12:23 PM
Reserved
Feb 27, 2026, 4:01 PM
Status
Analyzed
Published
Apr 30, 2026, 10:16 PM
Modified
Oct 26, 2026, 9:10 PM