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.
CVE-2026-47686
CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence
This critical-severity CVE scores 9.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.9
- EG Score
- 9.9(medium)
- EG Risk
- 45(Track)EG Risk 45/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity99% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 24%
- KEV
- Not listed
Published
August 17, 2026
Last Modified
August 19, 2026
Advisory Details (3)
Auto-updated Aug 19, 2026🔬 Proof of concept available. Patch available. Sources: github_release, github, github_commit.
github Patch Available🟡 PoC Available
Missing Error.cause Sanitization Enables VM2 Sandbox Escape to RCE · Advisory · patriksimek/vm2 · GitHub
https://github.com/patriksimek/vm2/security/advisories/GHSA-m283-3h24-438vgithub_release Patch Available
v3.11.6
Patch available: patriksimek/vm2 3.11.6
https://github.com/patriksimek/vm2/releases/tag/3.11.6github_commit Patch Available
commit 7e3faaf550f4 (patriksimek/vm2)
Patch available: patriksimek/vm2 3.11.6 (contains commit 7e3faaf550f4)
https://github.com/patriksimek/vm2/commit/7e3faaf550f4ab975bf4cdde183fcec49b056d8eVendor Advisories for CVE-2026-47686(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| vm2 | — | 3.11.6 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 12× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-21 00:30 UTCEG score recompute
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-19 18:17 UTCEG score recompute
- 2026-08-19 17:04 UTCEPSS rescore
- 2026-08-19 04:21 UTCEG score recompute
- 2026-08-19 04:12 UTCEG score recompute
- 2026-08-18 18:25 UTCEG score recompute
- 2026-08-18 18:00 UTCEG score recompute
- 2026-08-18 14:54 UTCEG score recompute
- 2026-08-18 13:48 UTCEPSS rescore
- 2026-08-17 21:32 UTCEG score recompute
- 2026-08-17 17:54 UTCEG score recompute
Related CVEs(same CWE)
Same CWE
10 shownCWE-693
- CVE-2021-32835EG 9.9EPSS p91CRITICAL
- CVE-2019-10328EG 9.9CRITICAL
- CVE-2019-1003030EG 9.9 KEVEPSS p100CRITICAL
- CVE-2021-27497NVD 6.5EG 9.8CRITICAL
- CVE-2020-10887EG 9.8EPSS p90CRITICAL
- CVE-2017-3197EG 9.8EPSS p92CRITICAL
- CVE-2018-9318EG 9.8EPSS p90CRITICAL
- CVE-2018-9311EG 9.8EPSS p90CRITICAL
- CVE-2017-8864EG 9.8CRITICAL
- CVE-2013-2465EG 9.8 KEVEPSS p100CRITICAL
Frequently asked(5)
What is CVE-2026-47686?
CVE-2026-47686 is a critical vulnerability published on August 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…
When was CVE-2026-47686 disclosed?
CVE-2026-47686 was first published in the National Vulnerability Database on August 17, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47686 actively exploited?
CVE-2026-47686 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.6% of all scored CVEs.
What is the CVSS score of CVE-2026-47686?
CVE-2026-47686 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-47686?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47686, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-47686
Is Your Infrastructure Affected by CVE-2026-47686?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.