CVE-2026-44008

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.9% (58th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-30078 (ENISA EUVD)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects and get the host Function object. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.2.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.9%
EPSS %ILE
58th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 13, 2026

Last Modified

October 26, 2026

Advisory Details (5)

Auto-updated Oct 26, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat.
Red Hat

2477201 – (CVE-2026-44008) CVE-2026-44008 vm2: vm2: Arbitrary code execution due to sandbox escape

https://bugzilla.redhat.com/show_bug.cgi?id=2477201
Red HatMentions a patch (unverified)

CVE-2026-44008 - 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-2026-44008
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:50850
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Sandbox breakout via `neutralizeArraySpeciesBatch` · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-9qj6-qjgg-37qq

Vendor Advisories for CVE-2026-44008(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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
vm2—
  • every version up to 3.11.2: fixed in 3.11.2
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 73× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 282 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 182 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 08:50 UTCEG score recompute
  2. 2026-10-30 08:50 UTCVendor advisory
  3. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  4. 2026-10-29 11:08 UTCEG score recompute
  5. 2026-10-29 11:08 UTCVendor advisory
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  7. 2026-10-28 13:18 UTCEG score recompute
  8. 2026-10-28 13:18 UTCVendor advisory
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  10. 2026-10-27 15:32 UTCVendor advisory
  11. 2026-10-26 17:29 UTCEG score recompute
  12. 2026-10-26 17:29 UTCVendor advisory
  13. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  14. 2026-10-26 14:58 UTCEG score recompute
  15. 2026-10-26 14:58 UTCVendor advisory
  16. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  17. 2026-10-25 16:22 UTCVendor advisory
  18. 2026-10-25 14:28 UTCEG score recompute
  19. 2026-10-24 18:39 UTCEG score recompute
  20. 2026-10-24 18:39 UTCVendor advisory
  21. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  22. 2026-10-23 20:57 UTCEG score recompute
  23. 2026-10-23 20:57 UTCVendor advisory
  24. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  25. 2026-10-22 23:14 UTCEG score recompute
Show 75 more
  1. 2026-10-22 23:14 UTCVendor advisory
  2. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  3. 2026-10-22 01:31 UTCEG score recompute
  4. 2026-10-22 01:31 UTCVendor advisory
  5. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  6. 2026-10-21 03:49 UTCEG score recompute
  7. 2026-10-21 03:49 UTCVendor advisory
  8. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  9. 2026-10-20 05:32 UTCEG score recompute
  10. 2026-10-20 05:32 UTCVendor advisory
  11. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  12. 2026-10-19 07:03 UTCEG score recompute
  13. 2026-10-19 07:03 UTCVendor advisory
  14. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  15. 2026-10-18 09:18 UTCVendor advisory
  16. 2026-10-18 03:39 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  18. 2026-10-17 10:53 UTCEG score recompute
  19. 2026-10-17 10:53 UTCVendor advisory
  20. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  21. 2026-10-16 12:28 UTCEG score recompute
  22. 2026-10-16 12:28 UTCVendor advisory
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  24. 2026-10-15 14:15 UTCEG score recompute
  25. 2026-10-15 14:15 UTCVendor advisory
  26. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  27. 2026-10-14 08:59 UTCEG score recompute
  28. 2026-10-14 08:59 UTCVendor advisory
  29. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  30. 2026-10-13 05:35 UTCEG score recompute
  31. 2026-10-13 05:35 UTCVendor advisory
  32. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  33. 2026-10-12 16:05 UTCEG score recompute
  34. 2026-10-12 07:52 UTCVendor advisory
  35. 2026-10-11 19:47 UTCEG score recompute
  36. 2026-10-11 17:02 UTCEG score recompute
  37. 2026-10-11 14:27 UTCEG score recompute
  38. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  39. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  40. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  41. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  42. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  43. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  44. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  45. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  46. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  47. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  48. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  49. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  50. 2026-09-27 03:15 UTCOSV refresh
  51. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  52. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  53. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  54. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  55. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  56. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  57. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  58. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  59. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  60. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  61. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  62. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  63. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  64. 2026-09-07 12:44 UTCEG score recompute
  65. 2026-09-07 12:44 UTCVendor advisory
  66. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  67. 2026-09-04 12:22 UTCEG score recompute
  68. 2026-09-04 12:22 UTCVendor advisory
  69. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  70. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  71. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  72. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  73. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  74. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  75. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.9% · 55th percentile

Frequently asked(5)

What is CVE-2026-44008?
CVE-2026-44008 is a critical-severity vulnerability; its CVE record was published on May 13, 2026. vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects…
When was the CVE record for CVE-2026-44008 published?
The CVE record for CVE-2026-44008 was published on May 13, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-44008 actively exploited?
CVE-2026-44008 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (58th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44008?
CVE-2026-44008 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-44008?
A fix for CVE-2026-44008 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-44008 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44008

Explore →

Is Your Infrastructure Affected by CVE-2026-44008?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.