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Two Critical Wasmtime Flaws Could Let Malicious WebAssembly Modules Escape Sandboxes

The Hacker News · 26 octobre 2026 à 12 h 52 · Gravité modérée

Two critical flaws in Wasmtime, a WebAssembly runtime that can be built into other software, could allow a malicious WebAssembly module to escape the sandbox intended to contain it, the project's maintainers say. An attacker would first need a vulnerable Wasmtime build to compile a module they control, and one of the flaws affects only ARM64 systems. Fixed versions were released on