Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type

影響: rust:wasmtime >= 46.0.0, < 48.0.7 → 48.0.7, rust:wasmtime >= 49.0.0, < 49.0.4 → 49.0.4

Wasmtime may panic when the host lowers a component model stream or future into a guest, if the host created that stream or future with one payload type and the guest expects a different one. This can happen when an embedder creates a stream or future, passes it through a guest, receives it back under a type-erased type such as StreamAny or FutureAny, and then passes it to a guest function with a different payload type. GHSA-63h4-6cx9-pjfj is a related advisory also fixing issues within this ar…

GitHub Advisory Databaseで読む

2026/10/24 07:04、GitHub Advisory Databaseが「Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「警告」(medium) です。関連する技術: Rust、Wasmtime / Wasmer。CVE: CVE-2026-115892。