Skip to content

GHSA-7rr2-8fr3-fjqx

Duplicate Advisory: vm2: Host Promise rejection from an exposed constructor can terminate the vm2 host process

Medium Withdrawn Oct 5, 2026 npm
Severity
0.0 / 10
Medium · CVSS 4.0
Exploit chance (EPSS)
—
No score published
Known exploited
No
Not in CISA's catalog
Weakness
CWE-248 Uncaught Exception
Fix
3.12.2
Upgrade vm2 to this version or later

Description

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-2v2p-6j97-cjg9. This link is maintained to preserve external references.

Original Description

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled() on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If an embedder exposes a constructable host function whose constructor returns a native rejected Promise, an untrusted script executed via VM.run can invoke it with new and ignore the result; the rejected host Promise crosses the bridge unhandled and, under Node's strict unhandled-rejection policy, is promoted to an uncaught exception that terminates the host process.

Affected versions

npm

PackageVulnerableFixed in
vm2
< 3.12.2
3.12.2

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

vm2 npm → 3.12.2

npm
npm install vm2@3.12.2
yarn
yarn add vm2@3.12.2
pnpm
pnpm add vm2@3.12.2

Severity breakdown

CVSS 4.0 0.0

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack vector
Network
Attack complexity
Low
Attack requirements
Present
Privileges required
None
User interaction
None
Confidentiality (vulnerable system)
None
Integrity (vulnerable system)
None
Availability (vulnerable system)
High
Confidentiality (subsequent systems)
None
Integrity (subsequent systems)
None
Availability (subsequent systems)
High
Exploit maturity
Not defined
Scope
X

CVSS 3.1 6.8

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

Weakness

CWE-248: Uncaught Exception

An exception is thrown from a function, but it is not caught.

References

Timeline

  1. Published
  2. Withdrawn
  3. Last updated by the source
AdvisorySeverityWhy it's related
GHSA-489w-w794-jq94
vm2: NodeVM zlib Buffers expose pooled host memory across the VM boundary
High Also affects vm2
GHSA-2v2p-6j97-cjg9
vm2: Host Promise rejection from an exposed constructor can terminate the vm2 host process
Medium Also affects vm2
GHSA-5h3f-q97h-ccvc
vm2: NodeVM custom resolution bypasses external path boundaries
Critical Also affects vm2
GHSA-pq68-rvw4-xp4r
vm2 contains a sandbox escape vulnerability
Critical Also affects vm2
GHSA-f8gf-w286-fmq2
vm2: `allowAsync: false` can be bypassed through Promise thenable assimilation in VM and NodeVM
High Also affects vm2
GHSA-6rh5-qq4q-97xh
vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes
High Also affects vm2
GHSA-8686-vhfx-7r3j
vm2: NodeVM node:-prefixed negative builtin deny bypass exposes child_process
Critical Also affects vm2
GHSA-wjwh-qqvp-g4p4
vm2 sandbox escape via WebAssembly.compileStreaming Promise species bypass
Critical Also affects vm2
Is this in your code?

MergeHarbor checks every repository's dependencies against this database, ranks what matters by exploitability and reachability, routes it to the owning team and opens the fix pull request.

Check your repos with MergeHarbor