webassembly
Safeguard articles tagged "webassembly" — guides, analysis, and best practices for software supply chain and application security.
8 articles
WebAssembly's security model: sandbox guarantees and the attack surface that remains
Two Critical Wasmtime sandbox-escape CVEs landed on the same day in April 2026 — proof that a wasm sandbox is only as strong as the runtime enforcing it.
WebAssembly Security Explained (2026)
WebAssembly runs untrusted code in a memory-isolated sandbox, but sandboxed is not the same as safe. Here is how the Wasm security model actually works and where it breaks.
Analysis of documented WebAssembly sandbox escape vulnera...
Real documented WASM sandbox escape cases in Wasmtime and Wasmer, covering affected versions, severity, disclosure timelines, and how to remediate.
How the WASI security model constrains system access for ...
WASI's capability model gives Wasm modules only the exact files, sockets, and resources they're explicitly granted—but misconfiguration and runtime bugs still leave real gaps to close.
Practical steps to secure third-party WebAssembly plugins...
A step-by-step guide to securing third-party WebAssembly plugins in production: sandboxing, capability restriction, resource limits, provenance checks, and runtime monitoring.
WebAssembly WASI Security Model in 2025
A technical look at WASI Preview 2, the component model, and capability-based isolation for running untrusted code inside supply chain tooling.
WebAssembly Security: New Capabilities, New Supply Chain Questions
WebAssembly is expanding beyond the browser into server-side and edge workloads. The security model and supply chain implications deserve closer scrutiny.
WebAssembly Security: A Deep Dive into the Sandbox Model
WebAssembly promises near-native performance with a strong security sandbox. But the sandbox model has nuances that developers and security teams must understand to avoid dangerous assumptions.