---
title: "CVE-2026-92945: vm2 before 3.11.7 Module Allowlist Bypass via Prefix Matching"
url: https://erroneo.us/security/cve/CVE-2026-92945/
description: "CVE-2026-92945 (patriksimek vm2): vm2 before 3.11.7 contains a module allowlist bypass vulnerability in isPathAllowedForModule that uses raw string prefix…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-09-17
date_modified: 2026-10-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-92945"
kev: false
cvss: 2.3
epss: 0.00277
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-92945: vm2 before 3.11.7 Module Allowlist Bypass via Prefix Matching

**Signal:** Normal patch cycle. No exploitation signal; fix it in your next routine update if you are affected. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.3% , percentile 19: FIRST’s model estimates a 0.3% chance of exploitation activity in the next 30 days, higher than 19% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Editorial verdict: Check exposure. vm2: 22 Critical Sandbox Escapes, Fixed in 3.12.2 — If anything outside your trust boundary can get code into vm2, upgrade to 3.12.2 today and plan to move that code out of process; if vm2 only runs your own code, upgrade on a normal cycle.

## What it is

vm2 before 3.11.7 contains a module allowlist bypass vulnerability in isPathAllowedForModule that uses raw string prefix matching instead of boundary-anchored comparison. Attackers can reach non-allowlisted packages sharing a prefix with allowlisted modules by performing relative requires from allowlisted packages when transitive loading is disabled.

## Affected products (CVE record)

- patriksimek vm2: < 3.11.7

## Severity

- VulnCheck CVSS 4.0: 2.3 `CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N`
- VulnCheck CVSS 3.1: 4.2 `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.28% probability of exploitation activity in the next 30 days; percentile 19.

## Sources

- [GitHub Security Advisory (GHSA-7q3f-wx44-378m)](https://github.com/patriksimek/vm2/security/advisories/GHSA-7q3f-wx44-378m)
- [CVE.org record CVE-2026-92945](https://www.cve.org/CVERecord?id=CVE-2026-92945)
- [NVD entry CVE-2026-92945](https://nvd.nist.gov/vuln/detail/CVE-2026-92945)
- [VulnCheck Advisory: vm2 before 3.11.7 Module Allowlist Bypass via Prefix Matching](https://www.vulncheck.com/advisories/vm2-before-3.11.7-module-allowlist-bypass-via-prefix-matching)

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Source page: https://erroneo.us/security/cve/CVE-2026-92945/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt