CVE-2024-36421: Flowise Flowise Cors Misconfiguration Vulnerability

HIGH
Advisory Identifier: GHSA-66f2-xxgm-f6xp
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CVSS 7.5
CWE-346
Published
Advisory Summary

CVE-2024-36421 is a HIGH (CVSS 7.5) flowise cors misconfiguration vulnerability (CWE-346: Origin Validation Error) affecting Flowise libraries in the npm ecosystem. The issue involves flowise cors misconfiguration in packages/server/src/index.ts. Remediation is available in the latest vendor maintenance releases.

CVE-2024-36421 at a Glance

CVE Identifier CVE-2024-36421
GHSA Identifier GHSA-66f2-xxgm-f6xp
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-346: Origin Validation Error
Affected Product Flowise
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-36421

To remediate this vulnerability, upgrade all affected Flowise dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

flowise fixed: Latest secure release 
npm install flowise@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls flowise

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2024-36421, inspect your project dependencies using npm:

npm ls flowise

Analyze the terminal output to locate any version of Flowise in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls flowise command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-346: Origin Validation Error, where the product does not properly verify that the source of data or communication is valid. In Flowise, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Flowise is a drag & drop user interface to build a customized large language model flow. In version 1.4.3 of Flowise, A CORS misconfiguration sets the Access-Control-Allow-Origin header to all, allowing arbitrary origins to connect to the website. In the default configuration (unauthenticated), arbitrary origins may be able to make requests to Flowise, stealing information from the user. This CORS misconfiguration may be chained with the path injection to allow an attacker attackers without access to Flowise to read arbitrary files from the Flowise server. As of time of publication, no known patches are available.

CVE-2024-36421 Affected Flowise Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
flowise
npm/flowise
npm
≤ 1.4.3

References

NVD — CVE-2024-36421 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-36421
Flowise Source Repository REPOSITORY
https://github.com/FlowiseAI/Flowise
Flowise Source Repository REPOSITORY
https://github.com/FlowiseAI/Flowise/blob/e93ce07851cdc0fcde12374f301b8070f2043687/packages/server/src/index.ts#L122
GitHub Advisory / Wiki ADVISORY
https://securitylab.github.com/advisories/GHSL-2023-232_GHSL-2023-234_Flowise

Frequently Asked Questions

What is CVE-2024-36421?
CVE-2024-36421 is a security vulnerability in Flowise involving Flowise Cors Misconfiguration in packages/server/src/index.ts under CWE-346: Origin Validation Error.
Which Flowise versions are affected?
Affected versions include releases prior to current release patches across affected packages: flowise.
What version fixes CVE-2024-36421?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is flowise affected?
Yes, flowise is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2024-36421?
CVE-2024-36421 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-36421?
CVE-2024-36421 is classified under CWE-346: Origin Validation Error (The product does not properly verify that the source of data or communication is valid.).
How can I check npm dependencies for CVE-2024-36421?
Run the dependency tree command: 'npm ls flowise'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-66f2-xxgm-f6xp",
  "modified" : "2024-08-05T21:29:27Z",
  "published" : "2024-08-05T21:29:27Z",
  "aliases" : [ "CVE-2024-36421" ],
  "summary" : "Flowise Cors Misconfiguration in packages/server/src/index.ts",
  "details" : "Flowise is a drag & drop user interface to build a customized large language model flow. In version 1.4.3 of Flowise, A CORS misconfiguration sets the Access-Control-Allow-Origin header to all, allowing arbitrary origins to connect to the website. In the default configuration (unauthenticated), arbitrary origins may be able to make requests to Flowise, stealing information from the user. This CORS misconfiguration may be chained with the path injection to allow an attacker attackers without access to Flowise to read arbitrary files from the Flowise server. As of time of publication, no known patches are available.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "flowise"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.4.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-36421"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/FlowiseAI/Flowise"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FlowiseAI/Flowise/blob/e93ce07851cdc0fcde12374f301b8070f2043687/packages/server/src/index.ts#L122"
  }, {
    "type" : "ADVISORY",
    "url" : "https://securitylab.github.com/advisories/GHSL-2023-232_GHSL-2023-234_Flowise"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-346" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-08-05T21:29:27Z",
    "nvd_published_at" : "2024-07-01T16:15:04Z"
  }
}