CVE-2026-92958

HIGHPre-NVD 8.58.5—
EchelonGraph scoreHIGH confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. a secondary CVSS source baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: Elevated riskExposed: 0

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

vm2 through 3.11.6 contains a builtin-module denylist bypass in NodeVM. When the embedder uses the builtin wildcard together with negative entries (e.g. require: { builtin: ['*', '-fs', '-child_process'] }), negative entries are matched by exact module name in lib/builtin.js, so -fs removes only the builtin named fs and does not remove builtin subpaths such as fs/promises. Sandboxed code can therefore call require('fs/promises') or require('node:fs/promises') and reach the promise-based filesystem API despite fs being denied; node: prefix handling is likewise inconsistent (a -node:fs/promises entry does not block require('fs/promises')). Host file creation and writing were confirmed via fsp.writeFile(), and other fs/promises operations (cp, mkdir, rename, rm, rmdir, truncate, read operations, etc.) are also reachable. This issue is fixed in vm2 3.11.7.

CVSS v3
8.5
EG Score
8.5(high)
EG Risk
54(Track)
EG Risk 54/100SSVC: 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
Severity85% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
Patch available. Sources: github.
generic

vm2 before 3.11.7 Denylist Bypass via fs/promises | Advisories | VulnCheck

https://www.vulncheck.com/advisories/vm2-before-3.11.7-denylist-bypass-via-fs-promises
github Patch Available

NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-6rh5-qq4q-97xh

Vendor Advisories for CVE-2026-92958(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 29× in last 7d / 34× 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. 2026-09-25 04:24 UTCGHSA enrichment
  2. 2026-09-24 15:45 UTCEG score recompute
  3. 2026-09-24 15:45 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 03:06 UTCEG score recompute
  6. 2026-09-24 03:06 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 14:27 UTCGHSA enrichment
  9. 2026-09-23 01:49 UTCEG score recompute
  10. 2026-09-23 01:49 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-22 13:10 UTCGHSA enrichment
  13. 2026-09-22 00:31 UTCEG score recompute
  14. 2026-09-22 00:31 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 11:53 UTCGHSA enrichment
  17. 2026-09-20 23:15 UTCEG score recompute
  18. 2026-09-20 23:14 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 10:34 UTCGHSA enrichment
  21. 2026-09-19 21:53 UTCEG score recompute
  22. 2026-09-19 21:53 UTCGHSA enrichment
  23. 2026-09-19 09:13 UTCGHSA enrichment
  24. 2026-09-18 20:35 UTCEG score recompute
  25. 2026-09-18 20:35 UTCGHSA enrichment
Show 9 more
  1. 2026-09-18 19:44 UTCEG score recompute
  2. 2026-09-18 19:44 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 15:45 UTCGHSA enrichment
  5. 2026-09-18 03:01 UTCEG score recompute
  6. 2026-09-18 03:01 UTCGHSA enrichment
  7. 2026-09-17 14:22 UTCEG score recompute
  8. 2026-09-17 13:50 UTCEG score recompute
  9. 2026-09-17 13:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-92958?
CVE-2026-92958 is a high vulnerability published on September 17, 2026. vm2 through 3.11.6 contains a builtin-module denylist bypass in NodeVM. When the embedder uses the builtin wildcard together with negative entries (e.g. require: { builtin: ['*', '-fs', '-child_process'] }), negative entries are matched by exact module name in lib/builtin.js, so -fs removes only…
When was CVE-2026-92958 disclosed?
CVE-2026-92958 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-2026-92958 actively exploited?
CVE-2026-92958 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 70.3% of all scored CVEs.
What is the CVSS score of CVE-2026-92958?
CVE-2026-92958 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-92958?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-92958, 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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