CVE-2026-47209 vm2: Bridge Proxy set trap ignores receiver parameter, enabling host object property injection via prototype chain

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the BaseHandler.set trap in bridge.js line 1231 ignores the receiver parameter and unconditionally writes to the host target object. Per the Proxy set trap specification, when receiver !== proxy e.g., when a child object...

EUVD-2026-36440

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the BaseHandler.set trap in bridge.js line 1231 ignores the receiver parameter and unconditionally writes to the host target object. Per the Proxy set trap specification, when receiver !== proxy e.g., when a child object...

CVE-2026-47209 vm2: Bridge Proxy set trap ignores receiver parameter, enabling host object property injection via prototype chain

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the BaseHandler.set trap in bridge.js line 1231 ignores the receiver parameter and unconditionally writes to the host target object. Per the Proxy set trap specification, when receiver !== proxy e.g., when a child object...

Sandbox Escape

vm2 is vulnerable to Sandbox Escape. The vulnerability is due to incomplete protection of dangerous cross-realm symbols in setup-sandbox.js and missing validation in the bridge's set, defineProperty, and deleteProperty traps. This allows sandboxed code to obtain and manipulate real cross-realm...

CVE-2026-44003

A flaw was found in vm2 before 3.11.0. A code transformer fast-path skips AST analysis when catch, import, and async are absent, allowing direct access to VM2INTERNALSTATEDONOTUSEORPROGRAMWILLFAIL and internal security functions handleException, wrapWith, import. Fixed in 3.11.0...

CVE-2026-44000

A flaw was found in vm2 before 3.11.0. Host-side Promises that resolve to host objects deliver values to sandbox .then callbacks without cross-realm conversion ensureThis instead of from/proxy wrapping, allowing sandbox code to interact with host objects directly. Fixed in 3.11.0...

CVE-2026-43997

A flaw was found in vm2 before 3.11.0, a Node.js sandbox library. Sandboxed code can obtain the host Object e.g. via HostObject.getOwnPropertySymbols and Symbolnodejs.util.inspect.custom, bypassing isolation and enabling arbitrary code execution on the host...

CVE-2026-45411

A flaw was found in vm2 before 3.11.3. Host exceptions can be caught from sandbox code using yield inside an async generator; closing the generator with return awaits the value and passes host exceptions back into the sandbox iterator, enabling escape and arbitrary host command execution. Fixed i...

CVE-2026-44005

A flaw was found in vm2 3.9.6 through 3.10.5. The VM bridge exposes mutable proxies for host intrinsic prototypes and forwards sandbox writes via otherReflectSet/otherReflectDefineProperty, allowing mutation of host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox...

CVE-2026-44009

A flaw was found in vm2 before 3.11.2. A sandbox escape vulnerability allows remote attackers to execute arbitrary code on the host system by breaking vm2 isolation. Fixed in 3.11.2...

CVE-2026-44007

A flaw was found in vm2 before 3.11.1. With nesting: true, sandbox code can require'vm2' regardless of outer require settings including require: false, spawn an inner NodeVM with unrestricted require, and execute arbitrary OS commands on the host. Fixed in 3.11.1...

CVE-2026-44008

A flaw was found in vm2 before 3.11.2. The neutralizeArraySpeciesBatch method can invoke host-side getters on array prototypes, exposing host objects and the host Function into the sandbox for escape and arbitrary command execution. Fixed in 3.11.2...

CVE-2026-44006

A flaw was found in vm2 before 3.11.0. Sandboxed code can reach BaseHandler.getPrototypeOf to obtain arbitrary prototypes, enabling sandbox escape and arbitrary code execution. Fixed in 3.11.0...

ROOT-APP-NPM-CVE-2026-43998 CVE-2026-43998 in @rootio/vm2 - Patched by Root

Root has patched CVE-2026-43998 in the @rootio/vm2 package for Root:npm. Multiple fixed versions available...

ROOT-APP-NPM-CVE-2026-43999 CVE-2026-43999 in @rootio/vm2 - Patched by Root

Root has patched CVE-2026-43999 in the @rootio/vm2 package for Root:npm. Multiple fixed versions available...

Incomplete List of Disallowed Inputs

Overview org.webjars.npm:vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs via the NodeVM builtin allowlist in lib/builtin.js. An attacker can read host-process state by...

@aiconnect/codelets-runner (>=0.1.0 <=0.2.0), @cairncms/api (>=1.0.0-beta.1 <=1.0.0-beta.4) +23 more potentially affected by CVE-2026-47141 via vm2 (>=3.0.0 <=3.11.3)

vm2 NPM version =3.0.0, =0.1.0, =1.0.0-beta.1, =3.0.46, =0.1.0, =1.0.0, =1.1.15, =1.27.8, =1.0.0-beta.1, =1.1.0, =0.2.0, =0.1.64, =0.1.61, =0.1.65 and more Source cves: CVE-2026-47141 Source advisory: SNYK:JS-VM2-17111339...

Incomplete List of Disallowed Inputs

Overview vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs via the NodeVM builtin allowlist in lib/builtin.js. An attacker can read host-process state by supplying a sandb...

Protection Mechanism Failure

Overview org.webjars.npm:vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Protection Mechanism Failure through the NodeVM builtin wildcard expansion in lib/builtin.js. An attacker can load Node’s private...

org.webjars.npm:degenerator (=4.0.4), org.webjars.npm:pac-resolver (=6.0.2) +1 more potentially affected by CVE-2026-47139 via org.webjars.npm:vm2 (=3.9.19)

org.webjars.npm:vm2 MAVEN version =3.9.19 is affected by a known vulnerability. The following packages have a transitive dependency on org.webjars.npm:vm2 and may be impacted: - org.webjars.npm:degenerator =4.0.4 - org.webjars.npm:pac-resolver =6.0.2 - org.webjars.npm:rocket.chatapps-engine =1.35...