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CVE-2023-37466

vm2 Sandbox Escape vulnerability

9.8 CriticalFix available

vm2 is an advanced vm/sandbox for Node.js. The library contains critical security issues and should not be used for production. The maintenance of the project has been discontinued. In vm2 for versions up to 3.9.19, Promise handler sanitization can be bypassed with the @@species accessor property allowing attackers to escape the sandbox and run arbitrary code, potentially allowing remote code execution inside the context of vm2 sandbox. Version 3.10.0 contains a patch for the issue.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

3.87%Up 3.8 points since Jul 14, 2023
90%50%10%1%

What each source reports

CVE List Score used 9.8

vm2 Sandbox Escape vulnerability

vm2 is an advanced vm/sandbox for Node.js. The library contains critical security issues and should not be used for production. The maintenance of the project has been discontinued. In vm2 for versions up to 3.9.19, Promise handler sanitization can be bypassed with the @@species accessor property allowing attackers to escape the sandbox and run arbitrary code, potentially allowing remote code execution inside the context of vm2 sandbox. Version 3.10.0 contains a patch for the issue.

Record
CVE-2023-37466
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
EUVDEUVD-2023-2028 9.8

vm2 is an advanced vm/sandbox for Node.js. The library contains critical security issues and should not be used for production. The maintenance of the project has been discontinued. In vm2 for versions up to 3.9.19, Promise handler sanitization can be bypassed with the @@species accessor property allowing attackers to escape the sandbox and run arbitrary code, potentially allowing remote code execution inside the context of vm2 sandbox. Version 3.10.0 contains a patch for the issue.

Record
EUVD-2023-2028
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-cchq-frgv-rjh5 9.8

vm2 Sandbox Escape vulnerability

In vm2 for versions up to 3.9.19, Promise handler sanitization can be bypassed, allowing attackers to escape the sandbox and run arbitrary code.

Impact

Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox.

Patches

None.

Workarounds

None.

References

PoC - https://gist.github.com/leesh3288/f693061e6523c97274ad5298eb2c74e9

For more information

If you have any questions or comments about this advisory:

  • Open an issue in VM2

Thanks to Xion (SeungHyun Lee) of KAIST Hacking Lab for disclosing this vulnerability.

Record
GHSA-cchq-frgv-rjh5
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
NVD 9.8

vm2 is an advanced vm/sandbox for Node.js. The library contains critical security issues and should not be used for production. The maintenance of the project has been discontinued. In vm2 for versions up to 3.9.19, Promise handler sanitization can be bypassed with the @@species accessor property allowing attackers to escape the sandbox and run arbitrary code, potentially allowing remote code execution inside the context of vm2 sandbox. Version 3.10.0 contains a patch for the issue.

Record
CVE-2023-37466
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
OSV 9.8

vm2 Sandbox Escape vulnerability

vm2 is an advanced vm/sandbox for Node.js. The library contains critical security issues and should not be used for production. The maintenance of the project has been discontinued. In vm2 for versions up to 3.9.19, Promise handler sanitization can be bypassed with the @@species accessor property allowing attackers to escape the sandbox and run arbitrary code, potentially allowing remote code execution inside the context of vm2 sandbox. Version 3.10.0 contains a patch for the issue.

Record
CVE-2023-37466
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
OSVGHSA-cchq-frgv-rjh5 9.8

vm2 Sandbox Escape vulnerability

In vm2 for versions up to 3.9.19, Promise handler sanitization can be bypassed, allowing attackers to escape the sandbox and run arbitrary code.

Impact

Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox.

Patches

None.

Workarounds

None.

References

PoC - https://gist.github.com/leesh3288/f693061e6523c97274ad5298eb2c74e9

For more information

If you have any questions or comments about this advisory:

  • Open an issue in VM2

Thanks to Xion (SeungHyun Lee) of KAIST Hacking Lab for disclosing this vulnerability.

Record
GHSA-cchq-frgv-rjh5
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
OSVROOT-APP-NPM-CVE-2023-37466 No score

CVE-2023-37466 in vm2 - Patched by Root

Root has patched CVE-2023-37466 in the vm2 package for Root:npm. Multiple fixed versions available.

Record
ROOT-APP-NPM-CVE-2023-37466
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
vm2
npm
through 3.9.19
3.10.0
vm2
npm
before 3.10.0
3.10.0
vm2
Root:npm
before 3.9.17-aikido.11
3.9.17-aikido.113.9.17-aikido.123.9.17-aikido.43.9.17-aikido.133.9.17-aikido.53.9.17-aikido.63.9.17-aikido.73.9.17-aikido.83.9.17-aikido.93.9.17-aikido.103.9.7-aikido.53.9.7-aikido.6
@rootio/vm2
Root:npm
before 3.9.17-root.io.3
3.9.17-root.io.33.9.17-root.io.113.9.17-root.io.123.9.17-root.io.43.9.17-root.io.133.9.17-root.io.53.9.17-root.io.63.9.17-root.io.73.9.17-root.io.83.9.17-root.io.93.9.17-root.io.103.9.7-root.io.53.9.7-root.io.6

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-37466 is a critical vulnerability (CVSS 9.8) in Patriksimek Vm2, published July 13, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.87%, the 90th percentile. Fixed in vm2 3.10.0.

References

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