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CVE-2026-22709

Vm2 code injection

9.8 CRITICALPublic exploitEPSS 1.29%
  1. Published26 Jan 2026

Description

vm2 is an open source vm/sandbox for Node.js. In vm2 prior to version 3.10.2, `Promise.prototype.then` `Promise.prototype.catch` callback sanitization can be bypassed. This allows attackers to escape the sandbox and run arbitrary code. In lib/setup-sandbox.js, the callback function of `localPromise.prototype.then` is sanitized, but `globalPromise.prototype.then` is not sanitized. The return value of async functions is `globalPromise` object. Version 3.10.2 fixes the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Vm2< 3.10.2

Remediation

Fixed in
Vm2≥ 3.10.2

References

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Frequently asked

Is CVE-2026-22709 being actively exploited?

CVE-2026-22709 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.29%.

How severe is CVE-2026-22709?

CVE-2026-22709 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.29% probability of exploitation.

Which products are affected by CVE-2026-22709?

Affected products include Vm2.

How do I fix CVE-2026-22709?

Upgrade affected software to a fixed version, for example Vm2 3.10.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.