Detections
Analytics

Langflow < 1.9.2 Multiple Vulnerabilities

critical Nessus Plugin ID 326243

Synopsis

The remote host is affected by multiple vulnerabilities.

Description

The version of Langflow installed on the remote host is prior to 1.9.2. It is, therefore, affected by multiple vulnerabilities:

 - The Shareable Playground feature enables execution of workflows by unauthenticated users.
 When the route /api/v1/build_public_tmp executes a flow, it allows providing arbitrary custom Python code as the nodes code inside the JSON payload, resulting in remote code execution. (CVE-2026-48519)

 - By controlling files that are digested into the RAG, an attacker can direct components based on BaseFileComponent to read any file on the filesystem by absolute path. Affected components include Docling, Read File, NVIDIA Retriever Extraction, Video File, and Unstructured API. (CVE-2026-55447)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Langflow version 1.9.2 or later.

See Also

http://www.nessus.org/u?59dbce02

http://www.nessus.org/u?5c9fdbc4

Plugin Details

Severity: Critical

ID: 326243

File Name: langflow_1_9_2.nasl

Version: 1.1

Type: Combined

Agent: windows, macosx, unix

Published: 7/10/2026

Updated: 7/10/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.19

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-48519

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:langflow:langflow

Required KB Items: installed_sw/Langflow

Patch Publication Date: 5/1/2026

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-48519, CVE-2026-55447