CVE-2026-47131

CRITICALPre-NVD 10.010.0
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 10.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (50th 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
10.0EG
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: 0.6%CVSS: 10.0Exploit: 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 version 3.11.4, by combining Buffer.call.call({}.__lookupGetter__, Buffer, "__proto__"), Buffer.call.call({}.__lookupSetter__, Buffer, "__proto__"), and Node.js's ERR_INVALID_ARG_TYPE Error, the host's TypeError constructor can be obtained, which allows the escape from the sandbox. This allows attackers to run arbitrary code. This issue has been patched in version 3.11.4.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
76
EG Risk 76/100

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 (value × EchelonGraph’s weight)
Severity100% × 45%
The EG Score, 10.0 of 10.
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
0.6%
EPSS %ILE
50th
KEV
Not listed

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 29, 2026

Last Modified

June 13, 2026

Advisory Details (3)

Auto-updated Oct 13, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Sandbox Escape · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-v6mx-mf47-r5wg
GitHub release Patch Available

v3.11.4

Patch available: patriksimek/vm2 v3.11.4

https://github.com/patriksimek/vm2/releases/tag/v3.11.4
GitHub commit Patch Available

commit 27c525f4615e (patriksimek/vm2)

Patch available: patriksimek/vm2 v3.11.4 (contains commit 27c525f4615e)

https://github.com/patriksimek/vm2/commit/27c525f4615e2b983f122e2bed327d810126f5c8

Vendor Advisories for CVE-2026-47131(4)

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

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatansible-automation-platform/automation-portal:17858542262026-08-05redhat
redhatrhdh/rhdh-hub-rhel9:17834481842026-07-08redhat
redhatrhdh/rhdh-hub-rhel9:17827612442026-06-30redhat

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 3.11.4: fixed in 3.11.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 38× 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 281 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 181 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-17 01:54 UTCEG score recompute
  2. 2026-10-17 01:54 UTCVendor advisory
  3. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  4. 2026-10-16 01:08 UTCEG score recompute
  5. 2026-10-16 01:08 UTCVendor advisory
  6. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  7. 2026-10-14 20:11 UTCEG score recompute
  8. 2026-10-14 20:11 UTCVendor advisory
  9. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  10. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  11. 2026-10-13 16:20 UTCEG score recompute
  12. 2026-10-13 16:20 UTCVendor advisory
  13. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  14. 2026-10-12 15:34 UTCEG score recompute
  15. 2026-10-12 15:34 UTCVendor advisory
  16. 2026-10-12 07:34 UTCVendor advisory
  17. 2026-10-11 19:45 UTCEG score recompute
  18. 2026-10-11 16:59 UTCEG score recompute
  19. 2026-10-11 14:24 UTCEG score recompute
  20. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  21. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  22. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  23. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  24. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  25. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 49th percentile
Show 75 more
  1. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  2. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  3. 2026-10-03 14:48 UTCOSV refresh
  4. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  5. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  6. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  7. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  8. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  9. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  10. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  11. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  13. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  16. 2026-09-14 06:24 UTCEG score recompute
  17. 2026-09-14 06:24 UTCVendor advisory
  18. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  19. 2026-09-13 01:06 UTCOSV refresh
  20. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  21. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  22. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  23. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  24. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  25. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  26. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  27. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  28. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  29. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  30. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  31. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  32. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  33. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  34. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  35. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  36. 2026-08-25 04:19 UTCEG score recompute
  37. 2026-08-25 04:19 UTCVendor advisory
  38. 2026-08-23 21:33 UTCVendor advisory
  39. 2026-08-23 17:52 UTCVendor advisory
  40. 2026-08-23 14:12 UTCEG score recompute
  41. 2026-08-23 14:12 UTCVendor advisory
  42. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  43. 2026-08-22 00:18 UTCEG score recompute
  44. 2026-08-22 00:18 UTCVendor advisory
  45. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  46. 2026-08-21 20:19 UTCVendor advisory
  47. 2026-08-21 15:08 UTCVendor advisory
  48. 2026-08-21 07:43 UTCVendor advisory
  49. 2026-08-21 01:14 UTCEG score recompute
  50. 2026-08-21 01:14 UTCVendor advisory
  51. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  52. 2026-08-20 21:25 UTCVendor advisory
  53. 2026-08-20 17:31 UTCVendor advisory
  54. 2026-08-20 10:26 UTCEG score recompute
  55. 2026-08-20 10:26 UTCVendor advisory
  56. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  57. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  58. 2026-08-17 14:39 UTCEG score recompute
  59. 2026-08-17 14:39 UTCVendor advisory
  60. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  61. 2026-08-17 10:38 UTCVendor advisory
  62. 2026-08-17 06:53 UTCVendor advisory
  63. 2026-08-16 15:02 UTCEG score recompute
  64. 2026-08-16 15:02 UTCVendor advisory
  65. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  66. 2026-08-16 09:45 UTCVendor advisory
  67. 2026-08-16 06:04 UTCVendor advisory
  68. 2026-08-16 02:24 UTCEG score recompute
  69. 2026-08-16 02:24 UTCVendor advisory
  70. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  71. 2026-08-15 18:50 UTCVendor advisory
  72. 2026-08-15 02:11 UTCEG score recompute
  73. 2026-08-15 02:11 UTCVendor advisory
  74. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  75. 2026-08-14 22:31 UTCVendor advisory

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-47131?
CVE-2026-47131 is a critical-severity vulnerability; its CVE record was published on May 29, 2026. vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call({}.lookupGetter, Buffer, "proto"), Buffer.call.call({}.lookupSetter, Buffer, "proto"), and Node.js's ERRINVALIDARG_TYPE Error, the host's TypeError constructor can be obtained, which allows the…
When was the CVE record for CVE-2026-47131 published?
The CVE record for CVE-2026-47131 was published on May 29, 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 June 13, 2026; the record at its source may have been updated since.
Is CVE-2026-47131 actively exploited?
CVE-2026-47131 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47131?
CVE-2026-47131 has a CVSS base score of 10.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47131?
A fix for CVE-2026-47131 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-47131 are linked in the Vendor Advisories panel on this page.

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