CVE-2026-93604: Improper Access Control

vm2 through 3.12.0 exposes Node.js's crypto.setFips function to untrusted guest code when an embedder explicitly allowlists the crypto builtin for a NodeVM require.builtin: 'crypto'. The builtin sanitizer sanitizeCryptoModule in lib/builtin.js replaces crypto.setEngine but leaves crypto.setFips...

CVE-2026-93603: Improper Control of Generation of Code

vm2 through 3.12.0 fixed in 3.12.1 does not correctly handle a nullish this receiver in the apply trap of its bridge lib/bridge.js: when sandboxed code calls a host-provided non-strict sloppy-mode function without a receiver — e.g. fn, a detached method, fn.call, fn.applyundefined, Reflect.applyf...

CVE-2026-93605: Protection Mechanism Failure

vm2 NodeVM versions before 3.12.1 contain a sandbox escape vulnerability where the DANGEROUSBUILTINS denylist omits childprocess despite blocking other host-spawning modules. Attackers can require childprocess and execute arbitrary commands on the host system when NodeVM is configured with...

CVE-2026-93606: Protection Mechanism Failure

vm2 npm versions 3.12.0 and earlier contain a sandbox escape in VM and NodeVM. When an embedder exposes a host API that returns a host-realm Promise, the bridge's rejection sanitizer hostPromiseSanitizeReject / makeSanitizedPromiseCallback / normalizeHostPromiseCallbacks in lib/bridge.js only wra...

CVE-2026-92962

A flaw was found in vm2, a sandbox for running untrusted JavaScript. Malicious code running within the sandbox can exploit a weakness in how stack traces are handled. By manipulating the Array.prototype, an attacker can observe and intercept individual lines of stack traces, leading to an...

CVE-2026-92945

A flaw was found in vm2. This vulnerability allows an attacker to bypass the module allowlist, a security feature designed to restrict access to certain software modules. The flaw occurs due to an incorrect string comparison method used in the isPathAllowedForModule function. By exploiting this, ...

CVE-2026-92963

A flaw was found in vm2. An attacker can exploit this vulnerability by improperly accessing the VM2INTERNALSTATEDONOTUSEORPROGRAMWILLFAIL global variable through globalThis. This allows the attacker to retrieve sensitive internal information from the sandbox environment, leading to information...

CVE-2026-47683

A flaw was found in vm2, an open-source virtual machine VM sandbox for Node.js. This vulnerability allows malicious code running within the sandbox to bypass the configured memory allocation limit. By crafting specific calls to Buffer.concat or Buffer.from with attacker-controlled lengths, the...

CVE-2026-92942

A flaw was found in vm2. Sandboxed code can bypass the configured timeout mechanism by using the FinalizationRegistry feature. This allows an attacker to execute a busy loop in a cleanup callback, which is invoked outside the timeout accounting. Consequently, this can block the host event loop...

CVE-2026-92949

A flaw was found in vm2, a JavaScript sandbox. This vulnerability allows sandboxed scripts to bypass security protections, specifically vm.freeze and vm.readonly, which are designed to prevent unauthorized modifications to objects. An attacker can exploit this by directly accessing and invoking...

CVE-2026-92958

A flaw was found in vm2, a sandbox for Node.js. When the NodeVM embedder uses a builtin wildcard with negative entries to deny specific modules, such as 'fs' for file system access, the denylist mechanism fails to block subpaths like 'fs/promises'. This allows sandboxed code to bypass the intende...

Information Exposure

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 Information Exposure in the util.getCallSites function. An attacker can access sensitive information from the host environment, such as absolute file...

Incorrect Permission Assignment for Critical Resource

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 Incorrect Permission Assignment for Critical Resource via the tls module. An attacker can modify the process-wide certificate authorities by invoking...

Denial of Service (DoS)

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 Denial of Service DoS through the FinalizationRegistry process. An attacker can cause the host event loop to be blocked for an unbounded period by...

Arbitrary Code Injection

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 Arbitrary Code Injection in the handling of rejected host Promises via call or apply indirection. An attacker can execute arbitrary commands with the...

Exposure of Resource to Wrong Sphere

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 Exposure of Resource to Wrong Sphere in the globalAgent process. An attacker can access sensitive HTTPS credentials and intercept or manipulate...

Improper Control of Dynamically-Managed Code Resources

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 Improper Control of Dynamically-Managed Code Resources via the NodeVM process when an array-shaped require value is supplied with nesting enabled. An...

Information Exposure

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 Information Exposure via the error stack formatting process. An attacker can obtain absolute host filesystem paths, including those from Node.js...

Protection Mechanism Failure

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 Protection Mechanism Failure in the node:sqlite module exposure within the sandbox environment when certain builtins are permitted. An attacker can...

Protection Mechanism Failure

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 Protection Mechanism Failure in the requireImpl process. An attacker can execute arbitrary JavaScript code outside the intended sandbox by supplying...