Information disclosure in Patriksimek Vm2
CVE-2026-92947
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (41.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/patriksimek/vm2/security/advisories/GHSA-fcqc-726x-5wfc (vendor-advisory)
- www.vulncheck.com/advisories/vm2-before-3.11.7-memory-disclosure-via-buffer-pool (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92947?
- CVE-2026-92947 is a critical-severity vulnerability in Patriksimek Vm2, classified under Information Disclosure. CVSS score: 10.0/10. Published 2026-09-17.
- How severe is CVE-2026-92947?
- Critical severity. CVSS v3 base score is 10.0 out of 10.