CVE-2026-58494

A flaw was found in Wasmtime, a runtime for WebAssembly. A WebAssembly System Interface WASI guest with a read-only source file capability can exploit this vulnerability. During hard-link creation and renaming operations, the system checks directory permissions but fails to match file permissions...

CVE-2026-35186

A flaw was found in Wasmtime, a runtime for WebAssembly. The Winch compiler backend incorrectly handles the table.grow operator, leading to an internal type mismatch. This can result in a Denial of Service DoS, where the host process crashes. Additionally, under specific configurations with...

CVE-2026-34943

A flaw was found in Wasmtime, a runtime for WebAssembly. A malicious guest can exploit an issue where a flags-typed component model value, containing unexpected bit settings, causes the host system to panic during processing. This vulnerability can lead to a Denial of Service DoS, rendering the...

CVE-2026-35195

A flaw was found in Wasmtime, a runtime for WebAssembly. A malicious guest component can exploit an issue where the host does not validate memory allocation requests. This allows the guest to write arbitrary data to locations outside its designated memory. Depending on the configuration, this cou...