CVE-2026-44002Public exploitNetwork attack vector

Host path disclosure via unsanitized CallSite metadata

Published May 13, 2026 · Updated May 13, 2026

Information disclosure in Patrik Simek vm2 before 3.11.0 allows remote attackers to read host paths through sandbox stack traces. The CallSite wrapper passes unsanitized getFileName, source-location, and function-name values from V8 into Error.stack or prepareStackTrace. An attacker must be able to execute code in a vm2 sandbox; the exposure reveals directory structure, library paths, and framework versions without altering host data.

CVSS severity5.8
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Patrik Simek vm2 before 3.11.0 allows remote attackers to read host paths through sandbox stack traces. The CallSite wrapper passes unsanitized getFileName, source-location, and function-name values from V8 into Error.stack or prepareStackTrace. An attacker must be able to execute code in a vm2 sandbox; the exposure reveals directory structure, library paths, and framework versions without altering host data.

The record

CVE
CVE-2026-44002
Published
May 13, 2026
Updated
May 13, 2026
Vendor
Patrik Simek
Product
vm2
Classifications
CWE-209, T1518, T1083
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 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=< 3.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Patrik Simek · vm2version=< 3.11.0

Published CVSS scores

5.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
T1518Software Discovery
T1083File and Directory Discovery

Public exploit references

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

Technologies

Your stack

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Your stack

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