cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-78654
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 06:19:01 UTC
Updated2026-08-25 06:19:01 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 5.5 MEDIUM from [email protected]

CVSS:4.0/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

Problem Types: CWE-94 | CWE-1321 | CWE-1321 Improperly Controlled Modification of Object Prototype Attributes | CWE-94 Code Injection

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.5MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED6.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Primary7.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED7.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.0CNADECLARED7.3HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P
2.0CNADECLARED7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cleverbrush Framework affected 4.0 Not specified
CNA Cleverbrush Framework affected 4.1 Not specified
CNA Cleverbrush Framework affected 4.2 Not specified
CNA Cleverbrush Framework affected 4.3 Not specified
CNA Cleverbrush Framework affected 4.4.0 Not specified
CNA Cleverbrush Framework unaffected 4.4.1 Not specified
CNA Cleverbrush Deep affected 4.0 Not specified
CNA Cleverbrush Deep affected 4.1 Not specified
CNA Cleverbrush Deep affected 4.2 Not specified
CNA Cleverbrush Deep affected 4.3 Not specified
CNA Cleverbrush Deep affected 4.4.0 Not specified
CNA Cleverbrush Deep unaffected 4.4.1 Not specified

References

ReferenceSourceLinkTags
vuldb.com/vuln/394866/cti [email protected] vuldb.com
github.com/cleverbrush/framework/releases/tag/%40cleverbrush/async%404.4.1 [email protected] github.com
github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a893... [email protected] github.com
github.com/cleverbrush/framework/issues/213 [email protected] github.com
vuldb.com/submit/886401 [email protected] vuldb.com
github.com/cleverbrush/framework [email protected] github.com
github.com/cleverbrush/framework/pull/215 [email protected] github.com
vuldb.com/vuln/394866 [email protected] vuldb.com
vuldb.com/cve/CVE-2026-78654 [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Classif1ed_mick (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-08-24T02:00:00.000ZVulDB entry created
CNA2026-08-25T00:00:00.000ZAdvisory disclosed
CNA2026-08-25T01:13:27.000ZVulDB entry last update

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