CVE-2026-42048: Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to
Summary
Langflow (a tool for building AI-powered agents and workflows) has a path traversal vulnerability (a security flaw where attackers manipulate file paths to access files outside intended boundaries) in its Knowledge Bases API that allows authenticated attackers to delete arbitrary directories on the server by exploiting improper handling of knowledge base names. This flaw can cause data loss and service disruption.
Solution / Mitigation
This vulnerability is fixed in version 1.9.0. Users should upgrade Langflow to 1.9.0 or later.
Vulnerability Details
9.6(critical)
EPSS: 0.0%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
network
low
low
none
May 12, 2026
Classification
Affected Vendors
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-42048
First tracked: May 12, 2026 at 08:09 PM
Classified by LLM (prompt v3) · confidence: 95%