vm2 exposes host HTTPS credentials and TLS traffic through globalAgent

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-92940: 0.43% estimated exploitation activity in the next 30 days; percentile 36.80 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary vm2 3.11.6 exposes the host process's real https.globalAgent when a NodeVM is explicitly allowed to require https. The module is wrapped as read-only, but calls to methods on the shared agent still mutate the host object. Sandbox code can register a free listener and receive host request options and the host TLS socket whenever an unrelated host HTTPS request releases a pooled connection. In a contained test, sandbox code allowed only the https builtin: - read the host request's bearer token from the agent event; - attached a data listener to the released host TLS socket and read the next host response body in plaintext; - learned the private service host and port; - sent an attacker-chosen authenticated POST using the stolen host token; and - received confirmation that the service accepted the action. The host application never passed its credentials, request, response, socket, or destination into the sandbox. They crossed the boundary solely because vm2 exposes the…

Published by the source

1 Oct 2026, 15:38 UTC

Last modified by the source

1 Oct 2026, 15:45 UTC

Source last checked

26 Oct 2026, 13:06 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-h85j-hv3c-qfgq

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GHSA-h85j-hv3c-qfgq

3. Revision 1 · created · 23 Oct 2026

   Published from ghsa record GHSA-h85j-hv3c-qfgq

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# Patch Next advisory brief: CVE-2026-92940

Advisory: vm2 exposes host HTTPS credentials and TLS traffic through globalAgent
IDs: CVE-2026-92940, GHSA-h85j-hv3c-qfgq
Record: https://patchnext.com/advisories/cve-2026-92940 (revision 3, source checked 26 Oct 2026, 13:06 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 10.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: vm2 3.11.7. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm vm2: affected >= 3.11.3, <= 3.11.6; fixed in 3.11.7

## Suggested inspection (read-only)
- `npm ls vm2 --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on vm2.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-h85j-hv3c-qfgq (GitHub-reviewed advisory GHSA-h85j-hv3c-qfgq lists affected ranges: npm vm2 >=3.11.3 <=3.11.6)
- Verified: https://osv.dev/vulnerability/GHSA-h85j-hv3c-qfgq (OSV record GHSA-h85j-hv3c-qfgq lists affected ranges: npm vm2 >=3.11.3 <3.11.7 (fixed))

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