CVE-2026-115383

A flaw was found in Wasmtime. This vulnerability allows an untrusted guest module to cause a Denial of Service DoS by triggering a host application crash. When the WebAssembly exceptions feature is enabled, Wasmtime improperly validates imported tags that use subtypes of expected types. A malicio...

VM2 Has a WASM Sandbox Escape

Summary Full sandbox escape with arbitrary code execution. Attacker code inside VM.run obtains host process object and runs host commands with zero host cooperation. Details Confirmed on: vm2 3.10.4, Node.js v25.6.1 x64 Linux Trigger: Attacker-controlled code passed to VM.run Requires: Node.js...

mozilla: Incomplete WebAssembly exception handing

The Mozilla Foundation Security Advisory describes this flaw as: Incomplete WebAssembly exception handing could have led to a use-after-free...