by Kastro
Paper/Archive/CVE-2026-92953

CVE-2026-92953

patriksimek vm2 — vm2 3.11.0 through 3.11.7 Prototype Pollution via TypedArray

EPSS 0.5%public exploitCVSS 10.0
critical.is priorityof 100
49
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 42.9.429 × 208.6Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation. Attackers can use prototype-walking primitives to reach and modify host Uint8Array.prototype, %TypedArray%.prototype, and ArrayBuffer.prototype, causing host-created typed arrays to observe attacker-controlled properties after VM.run() returns.

Affected

ProductAffectedFixed inSource
vm23.11.0 – < 3.11.83.11.8CNA

Scores by source

VulnCheck (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial

References

exploitgithub.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qrwriteupvulncheck.com/advisories/vm2-3.11.0-through-3.11.7-prototype-pollution-via-typedarray