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 Path Traversal in the Knowledge Bases API (DELETE /api/v1/knowledge_bases). This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this flaw to delete arbitrary directories anywhere on the server's filesystem, leading to data loss and potential service disruption. This vulnerability is fixed in 1.9.0.

CVSS v3 9.6 CRITICAL

9.6^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/langflow-ai/langflow/security/advisories/GHSA-9whx-c884-c68q	Exploit Vendor Advisory
https://github.com/langflow-ai/langflow/security/advisories/GHSA-9whx-c884-c68q	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-12 18:17

Updated : 2026-06-17 10:47

NVD link : CVE-2026-42048

Mitre link : CVE-2026-42048

CVE.ORG link : CVE-2026-42048

JSON object : View

Products Affected

langflow

langflow

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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