CVE-2023-31670: Webassembly Binary Toolkit

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue in wasm2c 1.0.32, wasm2wat 1.0.32, wasm-decompile 1.0.32, and wasm-validate 1.0.32 allows attackers to cause a Denial of Service (DoS) via running a crafted binary.

Affected products

• Webassembly Webassembly Binary Toolkit: version 1.0.32 only

Published 2023-05-23. Last modified 2026-06-17.