CVE-2026-44005

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 58% 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
Elevated
10.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 10.0Exploit: NoneExposed: 0

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

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

CVSS v3
10.0
EG Score
10.0(medium)
EPSS
53.8%
KEV
Not listed

Published

May 13, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jul 15, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat.
redhat
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json
github Patch Available🟡 PoC Available

Sandbox escape in vm2 · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
redhat

2477205 – (CVE-2026-44005) CVE-2026-44005 vm2: vm2: Sandbox Escape leading to Arbitrary Code Execution

https://bugzilla.redhat.com/show_bug.cgi?id=2477205
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-44005

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
vm2—3.11.0—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 48× 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 176 total refreshes for this CVE.

  1. 2026-07-16 17:03 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-13 22:30 UTCEPSS rescore
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  24. 2026-06-27 23:28 UTCEG score recompute
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  1. 2026-06-27 08:11 UTCEG score recompute
  2. 2026-06-27 03:08 UTCEPSS rescore
  3. 2026-06-26 20:31 UTCEG score recompute
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  5. 2026-06-25 23:50 UTCEG score recompute
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  7. 2026-06-25 13:49 UTCEPSS rescore
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  23. 2026-06-16 22:32 UTCEG score recompute
  24. 2026-06-16 17:52 UTCEPSS rescore
  25. 2026-06-16 11:30 UTCEG score recompute
  26. 2026-06-16 05:17 UTCEG score recompute
  27. 2026-06-16 00:46 UTCEG score recompute
  28. 2026-06-15 17:49 UTCEPSS rescore
  29. 2026-06-15 07:57 UTCEG score recompute
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  40. 2026-06-12 23:12 UTCEPSS rescore
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  42. 2026-06-12 22:17 UTCEG score recompute
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  44. 2026-06-12 13:51 UTCEG score recompute
  45. 2026-06-12 09:39 UTCEG score recompute
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  48. 2026-06-11 21:04 UTCEG score recompute
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  50. 2026-06-11 14:00 UTCEPSS rescore
  51. 2026-06-11 11:38 UTCEG score recompute
  52. 2026-06-11 07:25 UTCEG score recompute
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  54. 2026-06-10 23:02 UTCEG score recompute
  55. 2026-06-10 22:18 UTCEPSS rescore
  56. 2026-06-10 18:50 UTCEG score recompute
  57. 2026-06-10 14:39 UTCEG score recompute
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  60. 2026-06-10 10:27 UTCEG score recompute
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  63. 2026-06-09 21:49 UTCEG score recompute
  64. 2026-06-09 16:58 UTCEG score recompute
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  66. 2026-06-09 08:36 UTCEG score recompute
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  71. 2026-06-08 14:17 UTCEPSS rescore
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  73. 2026-06-08 10:14 UTCEG score recompute
  74. 2026-06-08 06:03 UTCEG score recompute
  75. 2026-06-08 01:51 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44005?
CVE-2026-44005 is a critical vulnerability published on May 13, 2026. vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled…
When was CVE-2026-44005 disclosed?
CVE-2026-44005 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44005 actively exploited?
CVE-2026-44005 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44005?
CVE-2026-44005 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-44005?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44005, 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

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