CVE-2026-78654

HIGH 7.3

cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-1321 CWE-94
Vendor	cleverbrush
Product	framework
Published	Aug 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

cleverbrush / framework

4.0 4.1 4.2 4.3 4.4.0

cleverbrush / deep

4.0 4.1 4.2 4.3 4.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/394866 vuldb.com: https://vuldb.com/vuln/394866/cti vuldb.com: https://vuldb.com/cve/CVE-2026-78654 vuldb.com: https://vuldb.com/submit/886401 github.com: https://github.com/cleverbrush/framework/issues/213 github.com: https://github.com/cleverbrush/framework/pull/215 github.com: https://github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a89371389327 github.com: https://github.com/cleverbrush/framework/releases/tag/%40cleverbrush/async%404.4.1 github.com: https://github.com/cleverbrush/framework/

Credits

🔍 Classif1ed_mick (VulDB User)