CVE-2023-37903

criticalpriority · attend · 51EPSS 0.042 · 91 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

4.21% (91st) EPSS

CVSS 10 · critical

Is it mine?

8 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

vm2 is an open source vm/sandbox for Node.js. In vm2 for versions up to and including 3.9.19, Node.js custom inspect function allows attackers to escape the sandbox and run arbitrary code. This may result in Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox. There are no patches and no known workarounds. Users are advised to find an alternative software.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 6

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.19.4criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-78USCWE-78US

exploits (1)

Public proof-of-concept and weaponised exploit code.

7h3h4ckv157/CVE-2023-37903Exploit for CVE-2023-37903 PoC · poc_in_github

affected products (8)

Products and version ranges known to be affected.

Open Source vm2 <= 3.9.19all versionscert_bundDEcpe:/a:vm2_project:vm2:3.9.19
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Enterprise Linux Advanced Cluster Management for Kubernetes 2all versionscert_bundDEcpe:/o:redhat:enterprise_linux:advanced_cluster_management_for_kubernetes_2
Red Hat Enterprise Linux Multicluster Engine for Kubernetesall versionscert_bundDEcpe:/o:redhat:enterprise_linux:multicluster_engine_for_kubernetes
patriksimek vm2≤ ≤ 3.9.19enisa_euvdEU
Node.js Foundation vm2≤ 3.9.19fstec_bduRU
vm2 project vm2≤ 3.9.19nvdUScpe:2.3:a:vm2_project:vm2:*:*:*:*:*:*:*:*
npm vm2≤ 3.9.19osvUSpkg:npm/vm2

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1863vm2: Schwachstelle ermöglicht CodeausführungDeutsch2023-07-23csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in vm2 ausnutzen, um beliebigen Programmcode auszuführen.
GHSA-g644-9gfx-q4q4vm2 Sandbox Escape vulnerability2023-07-13ghsa · osvUS
In vm2 for versions up to 3.9.19, Node.js custom inspect function allows 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 is to be disclosed on or after the 5th of September. ### Similarity with [CVE-2023-37466](https://nvd.nist.gov/vuln/detail/CVE-2023-37466) While this advisory might look similar to [CVE-2023-37466](https://nvd.nist.gov/vuln/detail/CVE-2023-37466), it is a completely different way of escaping the sandbox. ### For more information If you have any questions or comments about this advisory: - Open an issue in [VM2](https://github.com/patriksimek/vm2) Thanks to [Xion](https://twitter.com/0x10n) (SeungHyun Lee) of [KAIST Hacking Lab](https://kaist-hacking.github.io/) for disclosing this vulnerability.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd osv NVD CVE.org MITRE

published 2023-07-21modified 2026-06-17

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references (12)

External citations — patches, advisories, analysis.

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