CVE-2026-54786 Wasmtime: Leak in WASIp1 `fd_renumber` implementation

Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0.0 and 45.0.1 contain a native implementation of WASIp1 which suffers from a leak in the fdrenumber function where the...

CVE-2025-61670

Wasmtime is a runtime for WebAssembly. Wasmtime 37.0.0 and 37.0.1 have memory leaks in the C/C++ API when using bindings for the anyref or externref WebAssembly values. This is caused by a regression introduced during the development of 37.0.0 and all prior versions of Wasmtime are unaffected. If...

PT-2025-41158

Name of the Vulnerable Software and Affected Versions Wasmtime versions 37.0.0 through 37.0.1 Description Wasmtime, a runtime for WebAssembly, contains memory leaks within its C/C++ API when utilizing bindings for anyref or externref WebAssembly values. This issue stems from a regression introduc...