Vulnerability · Published Sep 17, 2026 · Assigned by VulnCheck

CVE-2026-92947vm2 before 3.11.7 Memory Disclosure via Buffer Pool

Critical 10.0

In plain English

A critical-severity information exposure in vm2 from patriksimek. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)0.5%top 58.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive data exposure and potential denial-of-service.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	vm2	3.11.7	GHSA-fcqc-726x-5wfc

Affected products (as reported)

Vendor	Product	Versions
patriksimek	vm2	0 – before 3.11.7

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

References

GitHub Security Advisory (GHSA-fcqc-726x-5wfc) vendor-advisory
VulnCheck Advisory: vm2 before 3.11.7 Memory Disclosure via Buffer Pool third-party-advisory