CVE-2026-92953

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-17. a secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation. Attackers can use prototype-walking primitives to reach and modify host Uint8Array.prototype, %TypedArray%.prototype, and ArrayBuffer.prototype, causing host-created typed arrays to observe attacker-controlled properties after VM.run() returns.

CVSS v3
10.0
EG Score
10.0(high)
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
0%
EPSS %ILE
28%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Sep 18, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Default VM can mutate host TypedArray and ArrayBuffer intrinsics after the host-prototype pollution fix · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr
generic

vm2 3.11.0 through 3.11.7 Prototype Pollution via TypedArray | Advisories | VulnCheck

https://www.vulncheck.com/advisories/vm2-3.11.0-through-3.11.7-prototype-pollution-via-typedarray

Vendor Advisories for CVE-2026-92953(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 19× 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.

  1. 2026-09-19 09:13 UTCGHSA enrichment
  2. 2026-09-19 05:00 UTCGHSA enrichment
  3. 2026-09-19 00:47 UTCGHSA enrichment
  4. 2026-09-18 20:35 UTCEG score recompute
  5. 2026-09-18 20:35 UTCGHSA enrichment
  6. 2026-09-18 19:54 UTCGHSA enrichment
  7. 2026-09-18 19:44 UTCEG score recompute
  8. 2026-09-18 19:44 UTCGHSA enrichment
  9. 2026-09-18 19:28 UTCEPSS rescore
  10. 2026-09-18 16:35 UTCGHSA enrichment
  11. 2026-09-18 12:22 UTCGHSA enrichment
  12. 2026-09-18 08:09 UTCGHSA enrichment
  13. 2026-09-18 03:56 UTCGHSA enrichment
  14. 2026-09-17 23:43 UTCGHSA enrichment
  15. 2026-09-17 18:41 UTCEG score recompute
  16. 2026-09-17 18:40 UTCGHSA enrichment
  17. 2026-09-17 14:22 UTCEG score recompute
  18. 2026-09-17 13:50 UTCEG score recompute
  19. 2026-09-17 13:49 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-92953?
CVE-2026-92953 is a critical vulnerability published on September 17, 2026. vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation. Attackers can use prototype-walking primitives to reach and modify host Uint8Array.prototype, %TypedArray%.prototype, and ArrayBuffer.prototype, causing host-created typed arrays…
When was CVE-2026-92953 disclosed?
CVE-2026-92953 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-92953 actively exploited?
CVE-2026-92953 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 72.1% of all scored CVEs.
What is the CVSS score of CVE-2026-92953?
CVE-2026-92953 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-92953?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-92953, 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

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