wac commit 385e1 was discovered to contain a heap overflow via the setup_call function at /wac-asan/wa.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted wasm file.
https://github.com/kanaka/wac/issues/19
https://gist.github.com/haruki3hhh/29237c52bd0cc30e3cc906f0af221b09