Answer in brief
CVE-2026-78654 records a Unknown severity vulnerability in cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution. The current sources do not mark it as known exploited. The current feed maps cleverbrush/deep (generic), cleverbrush/framework (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps cleverbrush/deep (generic), cleverbrush/framework (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| cleverbrush/deepgeneric | 4.0 || 4.1 || 4.2 || 4.3 || 4.4.0 | Not reported |
| cleverbrush/frameworkgeneric | 4.0 || 4.1 || 4.2 || 4.3 || 4.4.0 | Not reported |
Published upstream
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.