{"id":"CVE-2026-92953","title":"vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation","summary":"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…","severity":"critical","cvss":10,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","cwe":["CWE-913"],"vendor":"patriksimek","product":"vm2","affected":["vm2 >= 3.11.0 < 3.11.8"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T20:17:31.113","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92953","references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/vm2-3.11.0-through-3.11.7-prototype-pollution-via-typedarray","label":"disclosure@vulncheck.com"},{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-18T19:49:26.841413Z"},"epss":0.00343,"epssPercentile":0.27863,"ingestedAt":"2026-09-17T14:19:30.989Z","slug":"CVE-2026-92953","body":"## Overview\n\nvm2 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":67,"depthScoreParts":{"impact":55,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":207473,"id":"CVE-2026-92953","ts":1789761068823,"field":"exploit_available","old":"false","new":"true"}]}