vm2 is a sandbox library for running untrusted JavaScript in Node.js. In versions >= 3.10.0 and <= 3.11.7, Promises returned from the host realm into the sandbox are not marked as handled at the bridge boundary; only Promises created inside the sandbox are wrapped with a rejection-swallowing handler (lib/setup-sandbox.js), and the bridge only installs host-side rejection sanitizers when sandbox code calls .then/.catch/.finally. As a result, code running in the sandbox can invoke a host function that returns a rejected Promise (for example events.once() exposed via the NodeVM events builtin, or any embedder-provided Promise-returning API) and simply ignore the return value, leaving the host Promise unhandled so that Node.js's default unhandled-rejection behavior terminates the host process. This is an incomplete fix of GHSA-hw58-p9xv-2mjh. The issue is fixed in version 3.11.8.
CVE-2026-92954
“—” beside the score: it is equal to the CVSS score beside it.
Score 8.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-05. The CNA's CVSS baseline 8.6; sources differ by 0.0.
Also known asEUVD-2026-81603 (ENISA EUVD) · GHSA-gjq8-xm47-88rc (GitHub Security Advisories) · GHSA-mgj2-jqjq-q8gg (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 8.6
- EG Score
- 8.6HIGHhigh confidence
- EG Risk
- 70EG Risk 70/100
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)Severity86% × 45%Impact severity (EG Severity): CVSS 8.6 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 or medium mission impact; Attend at high (mission-essential systems).Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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
- 0.5%
- EPSS %ILE
- 41st
- 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 (8.6): severity, escalated by confirmed exploitation. This CVE's 8.6 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.6 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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 or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 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 or medium mission impact; Attend at high (mission-essential systems).
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 partial (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)14 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 partial (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
September 17, 2026
Last Modified
September 26, 2026
Advisory Details (2)
Auto-updated Sep 17, 2026vm2 3.10.0 through 3.11.5 Denial of Service via Host Promise | Advisories | VulnCheck
https://www.vulncheck.com/advisories/vm2-3.10.0-through-3.11.5-denial-of-service-via-host-promiseHost-returned Promise rejection can bypass vm2's unhandled-rejection hardening and terminate the host process · Advisory · patriksimek/vm2 · GitHub
https://github.com/patriksimek/vm2/security/advisories/GHSA-gjq8-xm47-88rcVendor Advisories for CVE-2026-92954(7)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:91651Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Developer Hub 1.9.10 release.
- RHSA-2026:82151Red Hat Product SecurityCritical
Red Hat Security Advisory: Ansible automation portal Red Hat Enterprise Linux Images
- RHSA-2026:80644Red Hat Product SecurityCritical
Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update
- RHSA-2026:80603Red Hat Product SecurityCritical
Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update
- RHSA-2026:79088Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Developer Hub 1.10.5 release.
- RHSA-2026:76788Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Developer Hub 1.10.5 Plugin Catalog GA plugins release.
- GHSA-gjq8-xm47-88rcGitHub Security AdvisoriesCritical
vm2: Host-returned Promise rejection can bypass vm2's unhandled-rejection hardening and terminate the host process
Patch Availability(7)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | rhdh/rhdh-hub-rhel9:1793117813 | 2026-10-28 | redhat |
| redhat | ansible-automation-platform/bootc-automation-portal-rhel9:1791865660 | 2026-10-13 | redhat |
| redhat | ansible-automation-platform/automation-portal:1791293780 | 2026-10-12 | redhat |
| redhat | ansible-automation-platform/automation-portal:1791295379 | 2026-10-12 | redhat |
| redhat | rhdh/rhdh-hub-rhel9:1791311495 | 2026-10-08 | redhat |
| redhat | rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend:1791251282 | 2026-10-06 | redhat |
| npm | vm2 @ 3.11.8 (fixes >= 3.10.0, <= 3.11.7) | — | 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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| vm2 | — |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 68× 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 99 of 137 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 38 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-11-01 07:37 UTCGHSA enrichmentGHSA-gjq8-xm47-88rc · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-11-01 07:37 UTCEG score recompute
- 2026-10-31 18:42 UTCEG score recompute
- 2026-10-31 18:42 UTCVendor advisory
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-25 13:50 UTCEG score recompute
- 2026-10-24 17:01 UTCEG score recompute
- 2026-10-24 17:01 UTCVendor advisory
- 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-18 02:59 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
Show 74 moreShow fewer
- 2026-10-17 15:35 UTCEG score recompute
- 2026-10-17 15:35 UTCVendor advisory
- 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-13 04:31 UTCEG score recompute
- 2026-10-13 04:31 UTCVendor advisory
- 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-12 14:44 UTCEG score recompute
- 2026-10-12 05:02 UTCVendor advisory
- 2026-10-11 19:12 UTCEG score recompute
- 2026-10-11 16:29 UTCEG score recompute
- 2026-10-11 16:01 UTCEG score recompute
- 2026-10-11 16:01 UTCVendor advisory
- 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-11 13:43 UTCEG score recompute
- 2026-10-11 03:43 UTCEG score recompute
- 2026-10-11 03:43 UTCVendor advisory
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-10 14:04 UTCVendor advisory
- 2026-10-10 01:47 UTCEG score recompute
- 2026-10-10 01:47 UTCVendor advisory
- 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-09 13:30 UTCVendor advisory
- 2026-10-08 21:49 UTCEG score recompute
- 2026-10-08 21:49 UTCVendor advisory
- 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-08 09:22 UTCEG score recompute
- 2026-10-08 09:22 UTCVendor advisory
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-07 21:04 UTCVendor advisory
- 2026-10-07 08:47 UTCVendor advisory
- 2026-10-06 20:30 UTCEG score recompute
- 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-05 19:57 UTCEG score recompute
- 2026-10-05 19:57 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-05 07:41 UTCEG score recompute
- 2026-10-05 07:41 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-04 19:24 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-04 07:06 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-03 18:50 UTCEG score recompute
- 2026-10-03 18:50 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-03 06:19 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-02 18:02 UTCEG score recompute
- 2026-10-02 18:02 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-02 05:45 UTCEG score recompute
- 2026-10-02 05:45 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-01 17:28 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-10-01 05:11 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-30 16:54 UTCEG score recompute
- 2026-09-30 16:54 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-30 03:54 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-29 15:38 UTCEG score recompute
- 2026-09-29 15:38 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-29 03:21 UTCEG score recompute
- 2026-09-29 03:21 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-28 15:04 UTCEG score recompute
- 2026-09-28 15:04 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-28 02:44 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-27 14:27 UTCEG score recompute
- 2026-09-27 14:27 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-27 02:10 UTCEG score recompute
- 2026-09-27 02:10 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-26 13:54 UTCEG score recompute
- 2026-09-26 13:53 UTCGHSA enrichmentGHSA-mgj2-jqjq-q8gg · GitHub severity CRITICAL · GitHub CVSS 8.6
- 2026-09-26 09:07 UTCEG score recompute
Related CVEs(same product + same vendor + same CWE)
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- CVE-2026-92941EG 10.0CRITICAL
Same vendor
10 shownredhat:RHSA-2026:76788
Frequently asked(5)
What is CVE-2026-92954?
When was CVE-2026-92954 made public?
Is CVE-2026-92954 actively exploited?
What is the CVSS score of CVE-2026-92954?
How do I remediate CVE-2026-92954?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-92954
Is Your Infrastructure Affected by CVE-2026-92954?
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