CVE-2026-5027 - Vulnerability Details - OpenCVE

The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.tenable.com/security/research/tra-2026-26

History

Fri, 27 Mar 2026 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Fri, 27 Mar 2026 15:15:00 +0000

Type	Values Removed	Values Added
Description		The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').
Title		Langflow - Path Traversal Arbitrary File Write via upload_user_file
Weaknesses		CWE-22
References		https://www.tenable.com/security/research/tra-2026-26
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: tenable

Published: 2026-03-27T14:54:53.609Z

Updated: 2026-03-27T15:11:42.918Z

Reserved: 2026-03-27T14:51:30.515Z

Link: CVE-2026-5027

Vulnrichment

Updated: 2026-03-27T15:11:27.738Z

NVD

Status : Received

Published: 2026-03-27T15:17:04.743

Modified: 2026-03-27T15:17:04.743

Link: CVE-2026-5027

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-22

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