Answer in brief
CVE-2026-73562 records a Medium severity vulnerability in Mongoose: Prototype pollution in the update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter). The current sources do not mark it as known exploited. The current feed maps Automattic/mongoose (generic), mongoose (npm), mongoose (npm), mongoose (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-73562 records a Medium severity vulnerability in Mongoose: Prototype pollution in the update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter). The current sources do not mark it as known exploited. The current feed maps Automattic/mongoose (generic), mongoose (npm), mongoose (npm), mongoose (npm) and additional mapped packages. 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 Automattic/mongoose (generic), mongoose (npm), mongoose (npm), mongoose (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Automattic/mongoosegeneric | < 6.13.10 || >= 7.0.0, < 7.8.10 || >= 8.0.0, < 8.24.1 || >= 9.0.0, < 9.7.2 | Not reported |
| mongoosenpm | <6.13.10 | 6.13.10 |
| mongoosenpm | >=7.0.0,<7.8.10 | 7.8.10 |
| mongoosenpm | >=8.0.0,<8.24.1 | 8.24.1 |
| mongoosenpm | >=9.0.0,<9.7.2 | 9.7.2 |
Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 13, 2026
Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a __proto__.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing. This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2.
Quoted source text, attributed separately from HOL analysis.
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 Automattic/mongoose (generic), mongoose (npm), mongoose (npm), mongoose (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Automattic/mongoosegeneric | < 6.13.10 || >= 7.0.0, < 7.8.10 || >= 8.0.0, < 8.24.1 || >= 9.0.0, < 9.7.2 | Not reported |
| mongoosenpm | <6.13.10 | 6.13.10 |
| mongoosenpm | >=7.0.0,<7.8.10 | 7.8.10 |
| mongoosenpm | >=8.0.0,<8.24.1 | 8.24.1 |
| mongoosenpm | >=9.0.0,<9.7.2 | 9.7.2 |
Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 13, 2026
Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a __proto__.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing. This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2.
Quoted source text, attributed separately from HOL analysis.