Exploit for CVE-2026-100721

CVE-2026-100721 — vm2 NodeVM external allowlist bypass Python...

Duplicate Advisory: vm2: Host Promise rejection from an exposed constructor can terminate the vm2 host process

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-2v2p-6j97-cjg9. This link is maintained to preserve external references. Original Description vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In...

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Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-489w-w794-jq94.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...

Uncaught Exception

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 Uncaught Exception via the host-to-sandbox promise delivery path in lib/bridge.js, where a host promise reaching the sandbox through the construct...

@accordproject/cicero-cli (>=0.3.4, <=0.24.1-20231019080841), @accordproject/cicero-core (>=0.12.5-20190619040852, <=0.24.1-20230627140514) +294 more potentially affected by CVE-2026-100722 via vm2 (>=3.0.0, <=3.11.6)

vm2 NPM version =3.0.0, =0.3.4, =0.12.5-20190619040852, =0.3.12-20180525105709, =0.3.4, =0.11.2-20190326183124, =0.22.2-20210714131804, =0.0.51-20180524154814, =0.0.51-20180524154814, =0.7.4-20190326150718, =2.0.0-rc.8.0.29, =0.1.0, =2.1.1, =0.1.1, =1.0.0, =1.4.0 and more Source cves:...

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 via the bufferFrom and related Buffer factory functions in lib/setup-sandbox.js, where Node.js serves small...

Incorrect Authorization

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 Authorization via LegacyResolver.isPathAllowed in lib/resolver-compat.js, which uses a raw path.startsWithmod.path check to authorize modul...

CVE-2026-100723

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-2026-100722

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If...

CVE-2026-100721

vm2 before 3.12.2 contains an authorization bypass in the NodeVM external-module resolver. When an embedder configures require.external with a custom resolver and context: 'host', LegacyResolver.customResolve in lib/resolver-compat.js records the resolved module directory in this.externals as new...

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' ,...

CVE-2026-100722 vm2 before 3.12.2 Host Process Termination via Construct Trap

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If...

CVE-2026-100722 vm2 before 3.12.2 Host Process Termination via Construct Trap

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If...

CVE-2026-100722

The vm2 library before version 3.12.2 is vulnerable to a host process termination due to a flaw in the sandbox-to-host construct trap . Specifically, the BaseHandler fails to apply host-side Promise rejection handling when the apply trap calls markHostPromiseHandled() on a returned value, while t...

CVE-2026-100722 vm2 before 3.12.2 Host Process Termination via Construct Trap

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If...

CVE-2026-100721 vm2 before 3.12.2 Authorization Bypass via Custom Resolver

vm2 before 3.12.2 contains an authorization bypass in the NodeVM external-module resolver. When an embedder configures require.external with a custom resolver and context: 'host', LegacyResolver.customResolve in lib/resolver-compat.js records the resolved module directory in this.externals as new...

CVE-2026-100721 vm2 before 3.12.2 Authorization Bypass via Custom Resolver

vm2 before 3.12.2 contains an authorization bypass in the NodeVM external-module resolver. When an embedder configures require.external with a custom resolver and context: 'host', LegacyResolver.customResolve in lib/resolver-compat.js records the resolved module directory in this.externals as new...

CVE-2026-100721 vm2 before 3.12.2 Authorization Bypass via Custom Resolver

vm2 before 3.12.2 contains an authorization bypass in the NodeVM external-module resolver. When an embedder configures require.external with a custom resolver and context: 'host', LegacyResolver.customResolve in lib/resolver-compat.js records the resolved module directory in this.externals as new...