CVE-2026-8257 | WebAssembly Binaryen up to 117 BrOn Parser wasm-ir-builder.cpp IRBuilder::makeBrOn assertion (Issue 8633)

A vulnerability identified as problematic has been detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion.

This vulnerability was named CVE-2026-8257. The attack needs to be approached locally. In addition, an exploit is available.

It is suggested to install a patch to address this issue.