CVE-2019-7152: Webassembly Binaryen

Medium severity, CVSS 6.5. EPSS: 1.2% chance of exploitation in the next 30 days.

A heap-based buffer over-read was discovered in wasm::WasmBinaryBuilder::processFunctions() in wasm/wasm-binary.cpp (when calling wasm::WasmBinaryBuilder::getFunctionIndexName) in Binaryen 1.38.22. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by wasm-opt.

Affected products

• Webassembly Binaryen: before 65 (fixed in 65)

Published 2019-01-29. Last modified 2026-06-17.