CVE-2020-18382

6.5 mediumEPSS 0.6%

Medium (6.5) in webassembly binaryen. EPSS 0.6% chance of exploitation in the next 30 days.

Heap-buffer-overflow in /src/wasm/wasm-binary.cpp in wasm::WasmBinaryBuilder::visitBlock(wasm::Block*) in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-opt.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2023-08-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

webassembly:binaryen

References

https://github.com/WebAssembly/binaryen/issues/1900
https://github.com/WebAssembly/binaryen/issues/1900

Check your stack JSON