CVE-2026-93604 Details
Description
vm2 through 3.12.0 exposes Node.js's crypto.setFips() function to untrusted guest code when an embedder explicitly allowlists the crypto builtin for a NodeVM (require.builtin: ['crypto']). The builtin sanitizer (sanitizeCryptoModule in lib/builtin.js) replaces crypto.setEngine but leaves crypto.setFips callable, and the readonly wrapper used to expose the host module does not localize side effects of forwarded host functions. Guest code can therefore call crypto.setFips() to change the FIPS mode of the entire host process; the modified mode is subsequently observed by trusted host code (crypto.getFips() changed from 0 to 1 in the reported test), crossing the NodeVM isolation boundary. Fixed in vm2 3.12.1.
A vulnerability in vm2 versions through 3.12.0 allows untrusted guest code to access Node.js's crypto.setFips() function. This issue arises when an embedder explicitly allowlists the crypto builtin for a NodeVM. The builtin sanitizer fails to neutralize crypto.setFips, leaving it callable, which can lead to unauthorized changes in the FIPS mode of the entire host process. This alteration is subsequently recognized by trusted host code, thereby crossing the NodeVM isolation boundary.
Upgrade vm2 to version 3.12.1 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 18, 2026CISA-ADP
Assessed Sep 18, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/patriksimek/vm2/security/advisories/GHSA-x3v6-43hc-82mc | CISA-ADP | AdvisoryExploitTechnical AnalysisVendor |
| https://github.com/patriksimek/vm2/security/advisories/GHSA-x3v6-43hc-82mc | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/vm2-3.11.8-sandbox-escape-via-crypto-setfips | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vm2 | <= 3.12.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 18, 2026 | New CVE Received | [email protected] |
| Sep 18, 2026 | CVE Modified | CISA-ADP |