Medium severity4.8NVD Advisory· Published Oct 29, 2026· Updated Oct 29, 2026
CVE-2026-119139
CVE-2026-119139
Description
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a leftover assertion in component::Func::call that rejects guest exports using the async ABI option. An attacker who supplies a component with an async-lifted export can crash the host process when an embedder invokes that export through Func::call.
Affected products
1- Range: <48.0.6, <49.0.3
Patches
Vulnerability mechanics
References
2News mentions
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