NPM: vm2: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool

NPM: vm2: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool vulnerability discovered by ? in WordPress Npm vm2 versions = 3.11.6...

EUVD-2026-81596

vm2: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool...

GHSA-FCQC-726X-5WFC vm2: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool

Summary Sandboxed code is able to disclose host memory used by small allocations by Buffer.from, Buffer.concat. Details vm2 exposes Buffer object to sandboxed code by default. Small Buffer allocations for example, Buffer.allocUnsafe, Buffer.fromarray, Buffer.fromstring, and Buffer.concat use the...

CLEANSTART-2026-KI11233 race condition in the Apache Kafka Java producer client’s buffer pool management can cause messages to be silently delivered to incorrect topics

Security vulnerability affects the apache-nifi package. A race condition in the Apache Kafka Java producer client’s buffer pool management can cause messages to be silently delivered to incorrect topics...

CVE-2026-92947

A flaw was found in vm2. The sandbox environment inadvertently exposes the host system's shared memory buffer pool to sandboxed code. An attacker running untrusted code inside the sandbox can access and modify these shared buffers, resulting in unauthorized information disclosure of host memory o...

Duplicate Advisory: vm2: NodeVM zlib Buffers expose pooled host memory across the VM boundary

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-489w-w794-jq94. This link is maintained to preserve external references. Original Description vm2 before 3.12.2 does not apply its Buffer backing-store ownership invariant byteOffset === 0 and buffer.byteLength...

CVE-2026-100723 vm2 before 3.12.2 Memory Disclosure via zlib Buffer Pool

vm2 before 3.12.2 does not apply its Buffer backing-store ownership invariant byteOffset === 0 and buffer.byteLength === length to Buffers returned from host builtin modules. When an application explicitly exposes Node's zlib module through NodeVM's builtin allowlist require: builtin: 'zlib' ,...

CVE-2026-100723

The vm2 library before version 3.12.2 is vulnerable to a memory disclosure and corruption issue due to a failure in applying Buffer backing-store ownership invariants for host builtin modules. When an application exposes the zlib module via NodeVM's builtin allowlist, zlib.deflateSync can return ...

CVE-2026-100723 vm2 before 3.12.2 Memory Disclosure via zlib Buffer Pool

vm2 before 3.12.2 does not apply its Buffer backing-store ownership invariant byteOffset === 0 and buffer.byteLength === length to Buffers returned from host builtin modules. When an application explicitly exposes Node's zlib module through NodeVM's builtin allowlist require: builtin: 'zlib' ,...

CVE-2026-100723 vm2 before 3.12.2 Memory Disclosure via zlib Buffer Pool

vm2 before 3.12.2 does not apply its Buffer backing-store ownership invariant byteOffset === 0 and buffer.byteLength === length to Buffers returned from host builtin modules. When an application explicitly exposes Node's zlib module through NodeVM's builtin allowlist require: builtin: 'zlib' ,...

PT-2026-99450

Name of the Vulnerable Software and Affected Versions vm2 versions prior to 3.12.2 Description The software fails to apply the Buffer backing-store ownership invariant to Buffers returned from host builtin modules. When the zlib module is exposed via the NodeVM builtin allowlist, the...

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 Buffer pool. An attacker can access and manipulate host memory by leveraging sandboxed code to acquire ArrayBuffers from...

GHSA-X5QG-8PQ6-39H6 Duplicate Advisory: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-fcqc-726x-5wfc This link is maintained to preserve external references. Original Description vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by...

Duplicate Advisory: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-fcqc-726x-5wfc This link is maintained to preserve external references. Original Description vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by...

CVE-2026-92947

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive dat...

CVE-2026-92947 vm2 before 3.11.7 Memory Disclosure via Buffer Pool

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive dat...

CVE-2026-92947 vm2 before 3.11.7 Memory Disclosure via Buffer Pool

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive dat...

CVE-2026-92947 vm2 before 3.11.7 Memory Disclosure via Buffer Pool

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive dat...

CVE-2026-92947

CVE-2026-92947 affects the vm2 Node.js sandboxing library prior to version 3.11.7 . The vulnerability arises because Node's shared Buffer pool is exposed to sandboxed code: sandboxed scripts can acquire ArrayBuffers from small allocations (e.g., Buffer.from, Buffer.concat), gaining read and write...

CVE-2026-92947: Exposure of Sensitive Information to an Unauthorized Actor

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive dat...