CVE-2026-44009

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 55% 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: 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. Prior to 3.11.2, This vulnerability is fixed in 3.11.2.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
52.8%
KEV
Not listed

Published

May 13, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jul 16, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat.
redhat
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44009.json
github Patch Available🟡 PoC Available

Sandbox Breakout Through Null Proto Exception · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-9vg3-4rfj-wgcm
redhat

2477185 – (CVE-2026-44009) CVE-2026-44009 vm2: vm2: Arbitrary Code Execution via Sandbox Escape

https://bugzilla.redhat.com/show_bug.cgi?id=2477185
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-44009

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
vm2—3.11.2—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 47× 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 170 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-08 15:16 UTCEPSS rescore
  9. 2026-07-07 13:46 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 02:23 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-01 15:07 UTCEPSS rescore
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-29 22:16 UTCEG score recompute
  17. 2026-06-29 14:06 UTCEPSS rescore
  18. 2026-06-28 14:07 UTCEPSS rescore
  19. 2026-06-28 12:50 UTCEG score recompute
  20. 2026-06-28 08:14 UTCEG score recompute
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 03:50 UTCEG score recompute
  23. 2026-06-27 23:28 UTCEG score recompute
  24. 2026-06-27 13:13 UTCEG score recompute
  25. 2026-06-27 08:11 UTCEG score recompute
Show 75 more
  1. 2026-06-27 03:08 UTCEPSS rescore
  2. 2026-06-26 20:31 UTCEG score recompute
  3. 2026-06-26 03:59 UTCEG score recompute
  4. 2026-06-25 19:38 UTCEG score recompute
  5. 2026-06-25 13:49 UTCEPSS rescore
  6. 2026-06-25 13:49 UTCEPSS rescore
  7. 2026-06-24 14:05 UTCEPSS rescore
  8. 2026-06-23 21:33 UTCEPSS rescore
  9. 2026-06-22 14:25 UTCEPSS rescore
  10. 2026-06-22 14:25 UTCEPSS rescore
  11. 2026-06-21 14:56 UTCEPSS rescore
  12. 2026-06-21 14:56 UTCEPSS rescore
  13. 2026-06-21 01:59 UTCEPSS rescore
  14. 2026-06-19 19:25 UTCEPSS rescore
  15. 2026-06-18 17:52 UTCEPSS rescore
  16. 2026-06-18 17:52 UTCEPSS rescore
  17. 2026-06-17 21:42 UTCEG score recompute
  18. 2026-06-17 17:53 UTCEPSS rescore
  19. 2026-06-17 14:27 UTCEG score recompute
  20. 2026-06-17 03:00 UTCEG score recompute
  21. 2026-06-16 22:31 UTCEG score recompute
  22. 2026-06-16 17:52 UTCEPSS rescore
  23. 2026-06-16 11:26 UTCEG score recompute
  24. 2026-06-16 05:17 UTCEG score recompute
  25. 2026-06-16 00:46 UTCEG score recompute
  26. 2026-06-15 17:49 UTCEPSS rescore
  27. 2026-06-15 07:57 UTCEG score recompute
  28. 2026-06-15 03:25 UTCEG score recompute
  29. 2026-06-14 23:04 UTCEG score recompute
  30. 2026-06-14 18:43 UTCEG score recompute
  31. 2026-06-14 14:22 UTCEG score recompute
  32. 2026-06-14 09:53 UTCEG score recompute
  33. 2026-06-14 05:31 UTCEG score recompute
  34. 2026-06-13 23:44 UTCEG score recompute
  35. 2026-06-13 23:00 UTCEPSS rescore
  36. 2026-06-13 10:05 UTCEG score recompute
  37. 2026-06-13 05:43 UTCEG score recompute
  38. 2026-06-13 01:21 UTCEG score recompute
  39. 2026-06-12 23:12 UTCEPSS rescore
  40. 2026-06-12 23:12 UTCEPSS rescore
  41. 2026-06-12 20:53 UTCEG score recompute
  42. 2026-06-12 16:32 UTCEG score recompute
  43. 2026-06-12 11:10 UTCEG score recompute
  44. 2026-06-12 06:49 UTCEG score recompute
  45. 2026-06-12 02:29 UTCEG score recompute
  46. 2026-06-11 22:07 UTCEG score recompute
  47. 2026-06-11 17:46 UTCEG score recompute
  48. 2026-06-11 14:00 UTCEPSS rescore
  49. 2026-06-11 13:25 UTCEG score recompute
  50. 2026-06-11 09:03 UTCEG score recompute
  51. 2026-06-11 04:42 UTCEG score recompute
  52. 2026-06-11 00:21 UTCEG score recompute
  53. 2026-06-10 22:18 UTCEPSS rescore
  54. 2026-06-10 19:58 UTCEG score recompute
  55. 2026-06-10 15:34 UTCEG score recompute
  56. 2026-06-10 13:22 UTCEPSS rescore
  57. 2026-06-10 13:22 UTCEPSS rescore
  58. 2026-06-10 11:13 UTCEG score recompute
  59. 2026-06-10 06:52 UTCEG score recompute
  60. 2026-06-10 02:29 UTCEG score recompute
  61. 2026-06-09 22:07 UTCEG score recompute
  62. 2026-06-09 17:46 UTCEG score recompute
  63. 2026-06-09 13:25 UTCEG score recompute
  64. 2026-06-09 09:04 UTCEG score recompute
  65. 2026-06-09 04:42 UTCEG score recompute
  66. 2026-06-09 00:21 UTCEG score recompute
  67. 2026-06-08 19:59 UTCEG score recompute
  68. 2026-06-08 14:17 UTCEPSS rescore
  69. 2026-06-08 14:17 UTCEPSS rescore
  70. 2026-06-08 12:25 UTCEG score recompute
  71. 2026-06-08 08:04 UTCEG score recompute
  72. 2026-06-08 03:43 UTCEG score recompute
  73. 2026-06-07 23:22 UTCEG score recompute
  74. 2026-06-07 19:01 UTCEG score recompute
  75. 2026-06-07 15:25 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44009?
CVE-2026-44009 is a critical vulnerability published on May 13, 2026. vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, This vulnerability is fixed in 3.11.2.
When was CVE-2026-44009 disclosed?
CVE-2026-44009 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-2026-44009 actively exploited?
CVE-2026-44009 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44009?
CVE-2026-44009 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-44009?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44009, 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-2026-44009

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