CVE-2026-92953 vm2 - Prototype Pollution

vm2 versions >= 3.11.0 and < 3.11.8 contain a prototype pollution caused by failure to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation, letting attackers modify host prototypes affecting typed arrays after VM.run(), exploit requires attacker to run code in sandbox.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.50% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Prototype Pollution
Impact
Privilege Escalation, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Published
17 September 2026
Updated
15 October 2026
Weakness
CWE-913

Vendor fix

Upgrade to version 3.11.8 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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