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Vulnerability Details :

CVE-2026-44005

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-13 May, 2026 | 17:40
Updated At-15 May, 2026 | 09:58
Rejected At-
Credits

vm2: Sandbox escape

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:13 May, 2026 | 17:40
Updated At:15 May, 2026 | 09:58
Rejected At:
â–¼CVE Numbering Authority (CNA)
vm2: Sandbox escape

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

Affected Products
Vendor
patriksimek
Product
vm2
Versions
Affected
  • >= 3.9.6, < 3.11.0
Problem Types
TypeCWE IDDescription
CWECWE-1321CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CWECWE-94CWE-94: Improper Control of Generation of Code ('Code Injection')
Type: CWE
CWE ID: CWE-1321
Description: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Type: CWE
CWE ID: CWE-94
Description: CWE-94: Improper Control of Generation of Code ('Code Injection')
Metrics
VersionBase scoreBase severityVector
3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
x_refsource_CONFIRM
Hyperlink: https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
Resource:
x_refsource_CONFIRM
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
exploit
Hyperlink: https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
Resource:
exploit
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:13 May, 2026 | 18:16
Updated At:14 May, 2026 | 16:16

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
CPE Matches

vm2_project
vm2_project
>>vm2>>Versions from 3.9.6(inclusive) to 3.11.0(exclusive)
cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*
Weaknesses
CWE IDTypeSource
CWE-94Secondarysecurity-advisories@github.com
CWE-1321Secondarysecurity-advisories@github.com
CWE ID: CWE-94
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-1321
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwqsecurity-advisories@github.com
Exploit
Vendor Advisory
https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit
Vendor Advisory
Hyperlink: https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory
Hyperlink: https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Exploit
Vendor Advisory

Change History

0
Information is not available yet

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