CVE-2026-78654
cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution
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.
INFO
Published Date :
Aug. 25, 2026, 6:19 a.m.
Last Modified :
Sept. 28, 2026, 11:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-78654
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Upgrade the cleverbrush framework to version 4.4.1.
- Apply the patch 810398c1308c500c3b8b6af380b5a89371389327.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78654.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78654 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78654
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-78654 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-78654 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Sep. 28, 2026
Action Type Old Value New Value Added Translation Title: framework y deep de cleverbrush, Description: Una vulnerabilidad ha sido encontrada en el framework cleverbrush y deep hasta la versión 4.4.0. Esto afecta a la función deepExtend del archivo libs/deep/src/deepExtend.ts. La manipulación conduce a una modificación de atributos de prototipo de objeto controlada de forma inadecuada. La explotación remota del ataque es posible. El exploit ha sido revelado al público y puede ser utilizado. La actualización a la versión 4.4.1 solucionará este problema. El identificador del parche es 810398c1308c500c3b8b6af380b5a89371389327. Debería actualizar el componente afectado. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 25, 2026
Action Type Old Value New Value Added Reference https://vuldb.com/submit/886401 Added SSVC {'id': 'CVE-2026-78654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-25T13:17:25.816993Z'} -
New CVE Received by [email protected]
Aug. 25, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:cleverbrush:framework:*:*:*:*:*:*:*:*'], 'vendor': 'cleverbrush', 'product': 'framework', 'versions': [{'status': 'affected', 'version': '4.0'}, {'status': 'affected', 'version': '4.1'}, {'status': 'affected', 'version': '4.2'}, {'status': 'affected', 'version': '4.3'}, {'status': 'affected', 'version': '4.4.0'}, {'status': 'unaffected', 'version': '4.4.1'}]}, {'cpes': ['cpe:2.3:a:cleverbrush:deep:*:*:*:*:*:*:*:*'], 'vendor': 'cleverbrush', 'product': 'deep', 'versions': [{'status': 'affected', 'version': '4.0'}, {'status': 'affected', 'version': '4.1'}, {'status': 'affected', 'version': '4.2'}, {'status': 'affected', 'version': '4.3'}, {'status': 'affected', 'version': '4.4.0'}, {'status': 'unaffected', 'version': '4.4.1'}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CWE CWE-94 Added CWE CWE-1321 Added Reference https://github.com/cleverbrush/framework/ Added Reference https://github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a89371389327 Added Reference https://github.com/cleverbrush/framework/issues/213 Added Reference https://github.com/cleverbrush/framework/pull/215 Added Reference https://github.com/cleverbrush/framework/releases/tag/%40cleverbrush/async%404.4.1 Added Reference https://vuldb.com/cve/CVE-2026-78654 Added Reference https://vuldb.com/submit/886401 Added Reference https://vuldb.com/vuln/394866 Added Reference https://vuldb.com/vuln/394866/cti