CVE-2026-44005

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.8%, top 45% 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
Elevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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)
EG Risk
76(Attend)
EG Risk 76/100SSVC: Attend

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 computed
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

May 13, 2026

Last Modified

August 6, 2026

Advisory Details (5)

Auto-updated Aug 27, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat.
redhat Patch Available
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-2026-44005 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-44005
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:50850

Vendor Advisories for CVE-2026-44005(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatansible-automation-platform/automation-portal:17858542262026-08-05redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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 6× in last 7d / 93× 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 186 total refreshes for this CVE.

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

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 August 6, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 44.9% of all scored CVEs.
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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44005

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