CVE-2026-44008

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-08. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated

Also known asEUVD-2026-30078 (ENISA EUVD) · GHSA-9qj6-qjgg-37qq (GitHub Security Advisories)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
59th
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.GitHub Security Advisory CVSS
EG Likelihood
0.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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, and whom BOD 26-04 binds: 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.

The score's inputs: 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

November 4, 2026

Advisory Details (7)

Auto-updated Nov 7, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release, 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
GitHub release Patch Available

v3.11.2

Patch available: patriksimek/vm2 v3.11.2

https://github.com/patriksimek/vm2/releases/tag/v3.11.2
GitHub commit Patch Available

commit ca195f017898 (patriksimek/vm2)

Patch available: patriksimek/vm2 v3.11.2 (contains commit ca195f017898)

https://github.com/patriksimek/vm2/commit/ca195f0178989d6f59eafb7af965806f829e20f7

Vendor Advisories for CVE-2026-44008(2)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatansible-automation-platform/automation-portal:17858542262026-08-05redhat
npmvm2 @ 3.11.2 (fixes <= 3.11.1)—ghsa

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 23× in last 7d / 82× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 348 rows 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 248 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:52 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  2. 2026-11-13 05:45 UTCEchelonGraph re-scored
  3. 2026-11-13 05:45 UTCVendor advisory
  4. 2026-11-13 05:45 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  6. 2026-11-12 08:03 UTCEchelonGraph re-scored
  7. 2026-11-12 08:03 UTCVendor advisory
  8. 2026-11-12 08:03 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  10. 2026-11-11 10:19 UTCEchelonGraph re-scored
  11. 2026-11-11 10:19 UTCVendor advisory
  12. 2026-11-11 10:19 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  14. 2026-11-10 12:30 UTCEchelonGraph re-scored
  15. 2026-11-10 12:30 UTCVendor advisory
  16. 2026-11-10 12:30 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  18. 2026-11-09 14:45 UTCVendor advisory
  19. 2026-11-09 14:45 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-11-08 17:03 UTCEchelonGraph re-scored
  21. 2026-11-08 17:03 UTCVendor advisory
  22. 2026-11-08 17:03 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  24. 2026-11-07 19:20 UTCEchelonGraph re-scored
  25. 2026-11-07 19:20 UTCVendor advisory
Show 75 more
  1. 2026-11-07 19:20 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  3. 2026-11-06 21:34 UTCEchelonGraph re-scored
  4. 2026-11-06 21:34 UTCVendor advisory
  5. 2026-11-06 21:34 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  7. 2026-11-06 08:55 UTCOSV refresh
  8. 2026-11-05 23:52 UTCEchelonGraph re-scored
  9. 2026-11-05 23:52 UTCVendor advisory
  10. 2026-11-05 23:52 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  12. 2026-11-05 02:10 UTCEchelonGraph re-scored
  13. 2026-11-05 02:10 UTCVendor advisory
  14. 2026-11-05 02:10 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  16. 2026-11-04 04:27 UTCEchelonGraph re-scored
  17. 2026-11-04 04:27 UTCVendor advisory
  18. 2026-11-04 04:27 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-11-04 03:41 UTCEchelonGraph re-scored
  20. 2026-11-04 03:41 UTCVendor advisory
  21. 2026-11-04 03:41 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  22. 2026-11-03 21:37 UTCEchelonGraph re-scored
  23. 2026-11-03 21:37 UTCVendor advisory
  24. 2026-11-03 21:37 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  26. 2026-11-02 23:48 UTCEchelonGraph re-scored
  27. 2026-11-02 23:48 UTCVendor advisory
  28. 2026-11-02 23:47 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  29. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  30. 2026-11-02 02:04 UTCEchelonGraph re-scored
  31. 2026-11-02 02:04 UTCVendor advisory
  32. 2026-11-02 02:04 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  33. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  34. 2026-11-01 07:49 UTCGHSA enrichmentGHSA-9qj6-qjgg-37qq · GitHub severity CRITICAL · GitHub CVSS 9.8
  35. 2026-11-01 07:49 UTCEchelonGraph re-scored
  36. 2026-11-01 04:21 UTCEchelonGraph re-scored
  37. 2026-11-01 04:21 UTCVendor advisory
  38. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  39. 2026-10-31 06:33 UTCEchelonGraph re-scored
  40. 2026-10-31 06:33 UTCVendor advisory
  41. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  42. 2026-10-30 08:50 UTCEchelonGraph re-scored
  43. 2026-10-30 08:50 UTCVendor advisory
  44. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  45. 2026-10-29 11:08 UTCEchelonGraph re-scored
  46. 2026-10-29 11:08 UTCVendor advisory
  47. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  48. 2026-10-28 13:18 UTCEchelonGraph re-scored
  49. 2026-10-28 13:18 UTCVendor advisory
  50. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  51. 2026-10-27 15:32 UTCVendor advisory
  52. 2026-10-26 17:29 UTCEchelonGraph re-scored
  53. 2026-10-26 17:29 UTCVendor advisory
  54. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  55. 2026-10-26 14:58 UTCEchelonGraph re-scored
  56. 2026-10-26 14:58 UTCVendor advisory
  57. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  58. 2026-10-25 16:22 UTCVendor advisory
  59. 2026-10-25 14:28 UTCEchelonGraph re-scored
  60. 2026-10-24 18:39 UTCEchelonGraph re-scored
  61. 2026-10-24 18:39 UTCVendor advisory
  62. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  63. 2026-10-23 20:57 UTCEchelonGraph re-scored
  64. 2026-10-23 20:57 UTCVendor advisory
  65. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  66. 2026-10-22 23:14 UTCEchelonGraph re-scored
  67. 2026-10-22 23:14 UTCVendor advisory
  68. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  69. 2026-10-22 01:31 UTCEchelonGraph re-scored
  70. 2026-10-22 01:31 UTCVendor advisory
  71. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  72. 2026-10-21 03:49 UTCEchelonGraph re-scored
  73. 2026-10-21 03:49 UTCVendor advisory
  74. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  75. 2026-10-20 05:32 UTCEchelonGraph re-scored

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 November 4, 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 (59th 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

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