patriksimek vm2 up to 3.11.6 Host-realm source transformer information disclosure

Summaryinfo

A vulnerability was found in patriksimek vm2 up to 3.11.6. It has been declared as problematic. This impacts an unknown function of the component Host-realm source transformer. Executing a manipulation can lead to information disclosure. This vulnerability is handled as CVE-2026-92936. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in patriksimek vm2 up to 3.11.6 and classified as problematic. This vulnerability affects some unknown processing of the component Host-realm source transformer. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

vm2 versions 3.11.0 through 3.11.6 leak absolute host filesystem paths to sandboxed code through error stack formatting. Attacker-supplied code can force the host-realm source transformer to throw a SyntaxError (for example by calling eval with malformed source) and then read the error's .stack property; the bridge forwards the .stack read to the host-realm formatter, bypassing the sandbox-side host-path redaction introduced for GHSA-v27g-jcqj-v8rw. The returned stack string discloses absolute paths from vm2, Node.js internals, and the embedding application's own source tree, along with host function names. Default new VM() and new NodeVM() configurations are affected without any special options, and the issue persists when string eval is disabled because the host-side transformer throws before eval is handled. The impact is information disclosure only; no code execution results. Fixed in vm2 3.11.7.

The advisory is available at github.com. This vulnerability was named CVE-2026-92936 since 09/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 3.11.7 eliminates this vulnerability.

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Productinfo

Vendor

• patriksimek

Name

• vm2

Version

• 3.11.0
• 3.11.1
• 3.11.2
• 3.11.3
• 3.11.4
• 3.11.5
• 3.11.6

Website

• Product: https://github.com/patriksimek/vm2/

CPE 2.3info

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