CVE-2026-58592

Vulnerability summary (CVE-2026-58592, Ladybird): A dangling-reference memory-safety flaw in Ladybird’s WebAssembly ESM integration loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes a stack-local Wasm::FunctionType by reference...

CVE-2026-58592 Ladybird - Web-Reachable Code Execution via Dangling FunctionType Reference in WebAssembly ESM Integration

Ladybird before commit 2f9dc7e contains a dangling-reference memory-safety flaw in its WebAssembly ESM-integration module loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes a stack-local Wasm::FunctionType by reference to...

PT-2026-54921

Name of the Vulnerable Software and Affected Versions Ladybird affected versions not specified Description A memory-safety flaw exists in the WebAssembly ESM-integration module loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes ...