CVE-2026-78654: Improperly Controlled Modification of Object Prototype Attributes in cleverbrush framework
CVE-2026-78654 is a medium severity vulnerability in the cleverbrush framework up to version 4.4.0. It affects the deepExtend function in the file libs/deep/src/deepExtend.ts, allowing improper modification of object prototype attributes. Remote exploitation is possible without authentication or user interaction. The issue is fixed in version 4.4.1.
AI Analysis
Technical Summary
This vulnerability in cleverbrush framework versions 4.0 through 4.4.0 involves improper control over modifications to object prototype attributes within the deepExtend function. This flaw can be remotely exploited without privileges or user interaction, potentially leading to partial confidentiality, integrity, and availability impacts. The vulnerability has a CVSS 4.0 base score of 6.9 (medium severity). The vendor has released version 4.4.1 to address this issue, identified by patch 810398c1308c500c3b8b6af380b5a89371389327.
Potential Impact
Successful exploitation allows an attacker to improperly modify object prototype attributes remotely, which can lead to partial compromise of confidentiality, integrity, and availability of the affected system. The vulnerability does not require privileges or user interaction, increasing its risk profile. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
Upgrade the cleverbrush framework to version 4.4.1 or later, which contains the official fix for this vulnerability. No other mitigations are specified or required once the upgrade is applied.
CVE-2026-78654: Improperly Controlled Modification of Object Prototype Attributes in cleverbrush framework
Description
CVE-2026-78654 is a medium severity vulnerability in the cleverbrush framework up to version 4.4.0. It affects the deepExtend function in the file libs/deep/src/deepExtend.ts, allowing improper modification of object prototype attributes. Remote exploitation is possible without authentication or user interaction. The issue is fixed in version 4.4.1.
CVSS v4.0
Score 6.9medium
Affected software
pkg:github/cleverbrush/frameworkcpe:2.3:a:cleverbrush:framework:*:*:*:*:*:*:*:*cpe:2.3:a:cleverbrush:deep:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in cleverbrush framework versions 4.0 through 4.4.0 involves improper control over modifications to object prototype attributes within the deepExtend function. This flaw can be remotely exploited without privileges or user interaction, potentially leading to partial confidentiality, integrity, and availability impacts. The vulnerability has a CVSS 4.0 base score of 6.9 (medium severity). The vendor has released version 4.4.1 to address this issue, identified by patch 810398c1308c500c3b8b6af380b5a89371389327.
Potential Impact
Successful exploitation allows an attacker to improperly modify object prototype attributes remotely, which can lead to partial compromise of confidentiality, integrity, and availability of the affected system. The vulnerability does not require privileges or user interaction, increasing its risk profile. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
Upgrade the cleverbrush framework to version 4.4.1 or later, which contains the official fix for this vulnerability. No other mitigations are specified or required once the upgrade is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-24T23:08:18.011Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8d318cacd9273b49c4850f
Added to database: 08/25/2026, 06:09:16 UTC
Last enriched: 08/25/2026, 06:22:08 UTC
Last updated: 08/25/2026, 06:23:58 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.