---
id: CVE-2026-78654
title: A vulnerability has been found in cleverbrush framework and deep up to 4.4.0
summary: >-
  A vulnerability has been found in cleverbrush framework and deep up to 4.4.0.
  This impacts the function deepExtend of the file libs/deep/src/deepExtend.ts.
  The manipulation leads to improperly controlled modification of object
  prototype …
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-94
  - CWE-1321
published: '2026-08-25'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T23:10:00.143'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78654'
references:
  - url: 'https://github.com/cleverbrush/framework/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a89371389327
    label: cna@vuldb.com
  - url: 'https://github.com/cleverbrush/framework/issues/213'
    label: cna@vuldb.com
  - url: 'https://github.com/cleverbrush/framework/pull/215'
    label: cna@vuldb.com
  - url: >-
      https://github.com/cleverbrush/framework/releases/tag/%40cleverbrush/async%404.4.1
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-78654'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/886401'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394866'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394866/cti'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/886401'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
ingestedAt: '2026-09-28T23:23:00.540Z'
---

## Overview

A vulnerability has been found in cleverbrush framework and deep up to 4.4.0. This impacts the function deepExtend of the file libs/deep/src/deepExtend.ts. The manipulation leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. Upgrading to version 4.4.1 will fix this issue. The identifier of the patch is 810398c1308c500c3b8b6af380b5a89371389327. You should upgrade the affected component.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.