Answer in brief
CVE-2026-47686 records a Critical severity (CVSS 9.9) vulnerability in vm2: Missing Error.cause Sanitization Enables VM2 Sandbox Escape to RCE. The current sources do not mark it as known exploited. The current feed maps patriksimek/vm2 (generic), vm2 (npm), vm2 (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.9. 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 patriksimek/vm2 (generic), vm2 (npm), vm2 (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| patriksimek/vm2generic | < 3.11.6 | Not reported |
| vm2npm | >=0 <3.11.6 | 3.11.6 |
| vm2npm | <=3.11.5 | 3.11.6 |
Published upstream
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, handleException() in lib/setup-sandbox.js sanitizes SuppressedError.error, SuppressedError.suppressed, and AggregateError.errors but does not sanitize Error.cause, allowing sandbox code to obtain a powerful host object such as process from an embedder-exposed host function that throws an error with that object as its cause and then execute arbitrary host commands. This issue is fixed in version 3.11.6.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-47686 records a Critical severity (CVSS 9.9) vulnerability in vm2: Missing Error.cause Sanitization Enables VM2 Sandbox Escape to RCE. The current sources do not mark it as known exploited. The current feed maps patriksimek/vm2 (generic), vm2 (npm), vm2 (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.9. 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 patriksimek/vm2 (generic), vm2 (npm), vm2 (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| patriksimek/vm2generic | < 3.11.6 | Not reported |
| vm2npm | >=0 <3.11.6 | 3.11.6 |
| vm2npm | <=3.11.5 | 3.11.6 |
Published upstream
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, handleException() in lib/setup-sandbox.js sanitizes SuppressedError.error, SuppressedError.suppressed, and AggregateError.errors but does not sanitize Error.cause, allowing sandbox code to obtain a powerful host object such as process from an embedder-exposed host function that throws an error with that object as its cause and then execute arbitrary host commands. This issue is fixed in version 3.11.6.
Quoted source text, attributed separately from HOL analysis.