CVE-2022-39266

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 1.1%, top 39% 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, nvd
Trending — 3 sources updated this week
9.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.6Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

isolated-vm is a library for nodejs which gives the user access to v8's Isolate interface. In versions 4.3.6 and prior, if the untrusted v8 cached data is passed to the API through CachedDataOptions, attackers can bypass the sandbox and run arbitrary code in the nodejs process. Version 4.3.7 changes the documentation to warn users that they should not accept cachedData payloads from a user.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
—
EPSS
61.5%
KEV
Not listed

Published

September 29, 2022

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Jul 13, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Vulnerable CachedDataOptions in API · Advisory · laverdet/isolated-vm · GitHub

https://github.com/laverdet/isolated-vm/security/advisories/GHSA-2jjq-x548-rhpv
generic

Status regarding CVE-2022-39266 · Issue #379 · laverdet/isolated-vm · GitHub

https://github.com/laverdet/isolated-vm/issues/379
generic

Commits · laverdet/isolated-vm · GitHub

https://github.com/laverdet/isolated-vm/commits/v4.3.7
github_commit Patch Available

commit 218e87a6d4e8 (laverdet/isolated-vm)

Patch available: laverdet/isolated-vm v4.6.0 (contains commit 218e87a6d4e8)

https://github.com/laverdet/isolated-vm/commit/218e87a6d4e8cb818bea76d1ab30cd0be51920e8

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
isolated-vm—4.3.7—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 50× 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.

Showing the most recent 100 of 108 total refreshes for this CVE.

  1. 2026-07-22 23:00 UTCEG score recompute
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-39266?
CVE-2022-39266 is a critical vulnerability published on September 29, 2022. isolated-vm is a library for nodejs which gives the user access to v8's Isolate interface. In versions 4.3.6 and prior, if the untrusted v8 cached data is passed to the API through CachedDataOptions, attackers can bypass the sandbox and run arbitrary code in the nodejs process. Version 4.3.7…
When was CVE-2022-39266 disclosed?
CVE-2022-39266 was first published in the National Vulnerability Database on September 29, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-39266 actively exploited?
CVE-2022-39266 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-39266?
CVE-2022-39266 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2022-39266?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-39266, 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.

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