CVE-2026-47141
published 2026-06-12CVE-2026-47141: vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through…
PriorityP340medium6.9CVSS 4.0
AVNACLATNPRNUINVCLVINVANSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.31%
22.4th percentile
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnostics_channel, async_hooks, and perf_hooks builtins are not blocked by the dangerous builtin denylist. These modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary. This issue has been patched in version 3.11.4.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ansible-automation-platform | automation-portal | — | — |
| patriksimek | vm2 | < 3.11.4 | 3.11.4 |
| rhdh | rhdh-hub-rhel9 | — | — |
| vm2_project | vm2 | >= 0 < 3.11.4 | 3.11.4 |
CVSS provenance
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/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
vendor_redhat6.9MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
NodeVM observability builtins leak host process and HTTP request data
ghsa·2026-05-29
CVE-2026-47141 [MEDIUM] CWE-668 NodeVM observability builtins leak host process and HTTP request data
NodeVM observability builtins leak host process and HTTP request data
## Summary
`NodeVM` exposes some process-wide observability builtins when they are allowed through `require.builtin`.
The following builtins are not blocked by the dangerous builtin denylist:
```text
diagnostics_channel
async_hooks
perf_hooks
```
These modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary.
**Note**: It is a host data exposure issue. The impact depends on whether the host application allows these builtins and uses HTTP, async request context, diagnostics channels, or performance marks in the same process.
## Details
Non-denied builtins are exposed to the sandbox through `lib/builtin.js`:
```js
builtins.set(key, special ?
Red Hat
vm2: vm2: NodeVM observability builtins leak host process and HTTP request data
vendor_redhat·2026-06-12·CVSS 6.9
CVE-2026-47141 [MEDIUM] CWE-653 vm2: vm2: NodeVM observability builtins leak host process and HTTP request data
vm2: vm2: NodeVM observability builtins leak host process and HTTP request data
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnostics_channel, async_hooks, and perf_hooks builtins are not blocked by the dangerous builtin denylist. These modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary. This issue has been patched in version 3.11.4.
A flaw was found in vm2, an open-source virtual machine (VM) sandbox for Node.js. Prior to version 3.11.4, NodeVM, a component of vm2, improperly exposed certain process-wide observability builtins, such as diagnostics_channel, async_hooks, and pe
No detection rules found.
No public exploits indexed.
2026-06-12
Published