MEDIUM 5.9 NVD
CVE-2026-119139
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 opt
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.
References
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m6w2-jwq2-cv2c
- https://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.6-and-49.0.0-before-49.0.
This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-10-29 via NVD.
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