vm2 is a widely used Node.js sandbox library; this flaw allows sandboxed code to execute host commands, enabling RCE in many apps and services across industries—requires org-wide attention.
CVE-2026-92957
vm2 NodeVM deny-list bypass allows sandboxed code to execute host commands
do firstUpgrade to a fixed release: 3.11.7.
Is CVE-2026-92957 being exploited?
Not confirmed. CVE-2026-92957 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.54% probability of exploitation in the next 30 days.
How severe is CVE-2026-92957?
CVE-2026-92957 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-92957?
Yes. A fix has been recorded for CVE-2026-92957. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-92957 affect?
CVE-2026-92957 affects vm2 <= 3.11.6, Node.js apps using vm2 NodeVM, Platforms embedding vm2 (cloud services, CLIs, Electron apps). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-92957?
Upgrade vm2 to 3.11.7 immediately and audit NodeVM builtin policies
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Sandbox escape: attacker can require child_process and run arbitrary host commands (execSync/spawn), enabling RCE and data/system compromise.
Immediate action required
- affected< 3.11.7
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
cisa ssvc
- exploitation
- poc
- automatable
- no
- technical impact
- total
Assessed by CISA 17 Sept 2026 (SSVC 2.0.3).
timeline
- 17 Sept 2026Published
- 17 Sept 2026CISA SSVC assessment: exploitation poc · same day later
- 19 Sept 2026Analysed by vulneraibility.com · 2 days later
- 26 Sept 2026CVE record last updated · 7 days later
also known as
- Advisorygithub.com /patriksimek/vm2/security/advisories/GHSA-8686-vhfx-7r3j
- Advisoryvulncheck.com /advisories/vm2-before-3.11.7-authentication-bypass-via-node-prefix
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- OSV: advisory aliases and downstream package versions
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.