CVE-2026-93604Public exploitNetwork attack vectorHinoki check available

Host cryptographic-policy modification via unsanitized crypto.setFips

Published Sep 18, 2026 · Updated Sep 18, 2026

Improper access control in vm2 through 3.12.0 allows attackers to alter host cryptographic policy from a NodeVM guest. The sanitizeCryptoModule function leaves crypto.setFips callable, while the readonly wrapper forwards the host function and its process-wide side effects. Exploitation requires an embedder to allowlist the crypto builtin and a Node/OpenSSL build with functional FIPS support; affected host cryptographic operations can subsequently fail.

CVSS severity7.2
High
EPSS probability0.34%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper access control in vm2 through 3.12.0 allows attackers to alter host cryptographic policy from a NodeVM guest. The sanitizeCryptoModule function leaves crypto.setFips callable, while the readonly wrapper forwards the host function and its process-wide side effects. Exploitation requires an embedder to allowlist the crypto builtin and a Node/OpenSSL build with functional FIPS support; affected host cryptographic operations can subsequently fail.

The record

CVE
CVE-2026-93604
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
Patrik Simek
Product
vm2
Classifications
CWE-284, CWE-693
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.12.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Patrik Simek · vm2version=0 <3.12.1

Published CVSS scores

7.2GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-693Protection Mechanism Failure

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

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