Most recent entries from all

EUVD-2026-337462

fkie_cve-2026-24781

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.0, VM2 suffers from a sandbox breakout vulnerability through the inspect function. 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 3.11.0.

GHSA-v37h-5mfm-c47c — VM2 Has Sandbox Breakout Through Inspect Function

Affected: npm: vm2

### Summary

VM2 suffers from a sandbox breakout vulnerability through the `inspect` function. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system.

### Details

The node `inspect` method allows to log details of objects. To get to the details, the implementation unwraps proxies. The unwrapped values can be extracted using the `this.seen` of the `stylize` function. This allows to get access to the internal proxy handler of VM2 which contains the sandbox object. Since the access to the handler is itself wrapped by a VM2 proxy, accessing the sandbox object in the proxy handler will result in a wrapped sandbox object given into the sandbox. This allows to write a wrapped host object to the wrapped sandbox object and read the raw host object from the raw sandbox object bypassing the proxy bridge.

### PoC

```js const obj = { subarray: Buffer.prototype.inspect, slice: Buffer.prototype.slice, hexSlice:()=>'', l:{__proto__: null} };

obj.slice(20, {showHidden: true, showProxy: true, depth: 10, stylize(a) { if (this.seen?.[1]?.objectWrapper) this.seen[1].objectWrapper().x = obj.slice; return a; }}); obj.l.x.constructor("return process")().mainModule.require('child_process').execSync('touch pwned'); ```

### Impact

Attackers can perform Remote Code Execution under the assumption that arbitrary code can be executed inside the context of a vm2 sandbox.

RHSA-2026:26234 — Red Hat Security Advisory: Red Hat Developer Hub 1.9.5 release.

fast-uri: fast-uri: Path traversal vulnerability allows bypass of security policies fast-uri: fast-uri: URI authority bypass due to improper delimiter handling vm2: vm2: Arbitrary code execution via sandbox breakout through inspect function crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation protobufjs: protobufjs: Arbitrary code execution via injected protobuf definition type fields xmldom: @xmldom/xmldom: xmldom: Arbitrary XML Node Injection @xmldom/xmldom: xmldom: xmldom: Denial of Service via deeply nested XML documents xmldom: xmldom: Arbitrary XML markup injection xmldom: xmldom: Arbitrary XML node injection via crafted processing instructions protobufjs: protobufjs: Arbitrary code execution due to unsafe expression generation from crafted protobuf descriptors

WID-SEC-W-2026-1349 — vm2: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in vm2 ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.