CVE-2019-7662: Webassembly Binaryen

Medium severity, CVSS 6.5. EPSS: 1.6% chance of exploitation in the next 30 days.

An assertion failure was discovered in wasm::WasmBinaryBuilder::getType() in wasm-binary.cpp in Binaryen 1.38.22. This allows remote attackers to cause a denial of service (failed assertion and crash) via a crafted wasm file.

Affected products

• Webassembly Binaryen: before 65 (fixed in 65)

Published 2019-02-09. Last modified 2026-06-17.