CVE-2026-92934

CRITICALPre-NVD 9.09.0—
EchelonGraph scoreHIGH confidence

Score 9.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-17. a secondary CVSS source baseline 9.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
9.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.0Exploit: Elevated riskExposed: 0

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

vm2 before 3.11.8 contains an incomplete fix for Error.cause sanitization that allows sandbox escape when revisited host-wrapped AggregateError objects are caught within a single exception handler traversal. Attackers can exploit cycle detection bypass in handleException to access unsanitized host proxies embedded in the errors array, enabling full remote code execution and process information disclosure from the sandbox.

CVSS v3
9.0
EG Score
9.0(high)
EG Risk
57(Track*)
EG Risk 57/100SSVC: Track*

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
Severity90% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 17, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

vm2 before 3.11.8 Sandbox Escape RCE via AggregateError | Advisories | VulnCheck

https://www.vulncheck.com/advisories/vm2-before-3.11.8-sandbox-escape-rce-via-aggregateerror
github Patch Available🟡 PoC Available

vm2 sandbox escape to host RCE via revisited host-wrapped AggregateError bypassing Error sanitization cycle short-circuit · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-x965-fc75-jpqh

Vendor Advisories for CVE-2026-92934(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 23× in last 7d / 23× 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 20:52 UTCGHSA enrichment
  2. 2026-09-19 17:07 UTCEG score recompute
  3. 2026-09-19 17:07 UTCGHSA enrichment
  4. 2026-09-19 13:22 UTCGHSA enrichment
  5. 2026-09-19 09:36 UTCGHSA enrichment
  6. 2026-09-19 05:49 UTCGHSA enrichment
  7. 2026-09-19 02:03 UTCGHSA enrichment
  8. 2026-09-18 22:18 UTCEG score recompute
  9. 2026-09-18 22:18 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 18:33 UTCGHSA enrichment
  12. 2026-09-18 14:44 UTCGHSA enrichment
  13. 2026-09-18 10:59 UTCGHSA enrichment
  14. 2026-09-18 07:14 UTCGHSA enrichment
  15. 2026-09-18 03:29 UTCGHSA enrichment
  16. 2026-09-17 23:44 UTCGHSA enrichment
  17. 2026-09-17 19:11 UTCEG score recompute
  18. 2026-09-17 19:11 UTCGHSA enrichment
  19. 2026-09-17 15:22 UTCEG score recompute
  20. 2026-09-17 14:35 UTCEG score recompute
  21. 2026-09-17 14:23 UTCEG score recompute
  22. 2026-09-17 13:50 UTCEG score recompute
  23. 2026-09-17 13:49 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-92934?
CVE-2026-92934 is a critical vulnerability published on September 17, 2026. vm2 before 3.11.8 contains an incomplete fix for Error.cause sanitization that allows sandbox escape when revisited host-wrapped AggregateError objects are caught within a single exception handler traversal. Attackers can exploit cycle detection bypass in handleException to access unsanitized host…
When was CVE-2026-92934 disclosed?
CVE-2026-92934 was first published in the National Vulnerability Database on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-92934 actively exploited?
CVE-2026-92934 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 46.9% of all scored CVEs.
What is the CVSS score of CVE-2026-92934?
CVE-2026-92934 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-92934?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-92934, 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

Explore the affected products and dependency analysis for CVE-2026-92934

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