CRITICAL9.3

RUSTSEC-2026-0327

Wasmtime component async-lifted callback result count is unvalidated, causing a native stack buffer overflow

Details

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-32h6-97mm-8q3c For more information see the GitHub-hosted security advisory.

Are you affected?

Enter the version of the package you're using.

Affected packages

crates.io/wasmtime

Introduced in: 39.0.0Fixed in: 48.0.4

Upgrade wasmtime to 48.0.4 or newer (ecosystem crates.io).

References

https://crates.io/crates/wasmtime[PACKAGE]
https://rustsec.org/advisories/RUSTSEC-2026-0327.html[ADVISORY]
https://github.com/bytecodealliance/wasmtime/pull/14471[WEB]