CVE-2026-47135

CVE-2026-47135 vm2 sandbox escape : The vm2 sandbox (Node.js) before 3.11.4 exposes real cross-realm Node.js symbols due to an incomplete Symbol.for override (only blocks two of nine dangerous symbols) and missing isDangerousCrossRealmSymbol checks in bridge write traps (set/defineProperty/delete...

CVE-2026-47131 vm2: Sandbox Escape

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call.lookupGetter, Buffer, "proto", Buffer.call.call.lookupSetter, Buffer, "proto", and Node.js's ERRINVALIDARGTYPE Error, the host's TypeError constructor can be obtained, which allows the escape from...

EUVD-2026-36441

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call.lookupGetter, Buffer, "proto", Buffer.call.call.lookupSetter, Buffer, "proto", and Node.js's ERRINVALIDARGTYPE Error, the host's TypeError constructor can be obtained, which allows the escape from...

CVE-2026-47131 vm2: Sandbox Escape

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call.lookupGetter, Buffer, "proto", Buffer.call.call.lookupSetter, Buffer, "proto", and Node.js's ERRINVALIDARGTYPE Error, the host's TypeError constructor can be obtained, which allows the escape from...

CVE-2026-47131 vm2: Sandbox Escape

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call.lookupGetter, Buffer, "proto", Buffer.call.call.lookupSetter, Buffer, "proto", and Node.js's ERRINVALIDARGTYPE Error, the host's TypeError constructor can be obtained, which allows the escape from...

CVE-2026-47131

vm2 prior to 3.11.4 contains a sandbox escape: by using Buffer.call.call with {}.lookupGetter /lookupSetter and Node.js ERR_INVALID_ARG_TYPE, an attacker can obtain the host TypeError constructor and break out of the sandbox, enabling arbitrary code execution. The issue is fixed in vm2 v3.11.4. R...

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...

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...

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...

CVE-2026-47209

vm2 (Node.js sandbox) had a vulnerability in the BaseHandler.set trap that ignores the receiver parameter and always writes to the host target, enabling inherited-property writes to leak onto host objects via prototype chains. This can allow attackers to assign Symbol-keyed properties (e.g., node...

CVE-2026-47131: Improper Control of Dynamically-Managed Code Resources

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call.lookupGetter, Buffer, "proto", Buffer.call.call.lookupSetter, Buffer, "proto", and Node.js's ERRINVALIDARGTYPE Error, the host's TypeError constructor can be obtained, which allows the escape from...

CVE-2026-47135: Protection Mechanism Failure

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, Symbol.for override in setup-sandbox.js only intercepts 2 of 9 dangerous Node.js cross-realm symbols. Combined with the bridge's set/defineProperty/deleteProperty traps having no isDangerousCrossRealmSymbol key check, sandbox...

CVE-2026-47140: Protection Mechanism Failure

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM blocks several dangerous Node.js builtins such as module, workerthreads, cluster, vm, repl, and inspector. However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach...

CVE-2026-47210: Improper Control of Dynamically-Managed Code Resources

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, a sandbox escape vulnerability in vm2 allows arbitrary code execution in the host process when untrusted code is executed with async support on runtimes exposing WebAssembly JSPI WebAssembly.promising / WebAssembly.Suspending...

CVE-2026-47141: Exposure of Resource to Wrong Sphere

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnosticschannel, asynchooks, and perfhooks builtins are not blocked by the dangerous builtin denylist. These modules...

CVE-2026-47209: Protection Mechanism Failure

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-2026-47137: Improper Control of Dynamically-Managed Code Resources

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx CVE-2023-37903 introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality options.require === false, which is...

CVE-2026-47139: Protection Mechanism Failure

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to http, https, http2, net, dgram, tls, dns, and dns/promises is blocked. However, Node.js also exposes...

CVE-2026-47208: Improper Control of Dynamically-Managed Code Resources

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, VM2 suffers from a sandbox breakout vulnerability. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This issue has been patched in version 3.11.4...