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CVE-2026-78654— cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution

Quick assessment

Affected
cleverbrush framework
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 cleverbrush 框架中（最高至 4.4.0 版本）发现了一个漏洞，该漏洞影响 文件中的 函数。此问题可导致对对象原型属性的修改缺乏适当控制，从而引发不安全的对象属性篡改。远程攻击者可利用该漏洞进行远程攻击。目前，该漏洞的利用方式已公开，可能被恶意利用。建议升级至 4.4.1 版本以修复此问题。补丁标识为 810398c1308c500c3b8b6af380b5a89371389327。请立即升级受影响的组件。

CVSS 7.3 · High EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 12

VendorProduct Version RangeStatus
cleverbrush deep 4.0 affected
4.1 affected
4.2 affected
4.3 affected
4.4.0 affected
4.4.1 unaffected
cleverbrush framework 4.0 affected
4.1 affected
4.2 affected
4.3 affected
4.4.0 affected
4.4.1 unaffected
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I. Basic Information for CVE-2026-78654

Vulnerability Information
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Vulnerability Title
cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cleverbrush framework 4.0 cpe:2.3:a:cleverbrush:framework:*:*:*:*:*:*:*:*
cleverbrush deep 4.0 cpe:2.3:a:cleverbrush:deep:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-78654

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7490 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-78654

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Patches & Fixes for CVE-2026-78654 (1)

Vendor Advisories for CVE-2026-78654 (2)

Exploits & Public PoCs for CVE-2026-78654 (1)

News Coverage for CVE-2026-78654 (1)

Vendor Pages for CVE-2026-78654 (1)

IV. Related Vulnerabilities

Same product: framework
Same weakness: CWE-1321

V. Comments for CVE-2026-78654

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