CVE-2026-119136 | Severity.io

Description

Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains insufficient checks in Store when mixing async-style and sync-style WebAssembly calls. Embedders re-entering WebAssembly via sync APIs from host functions called asynchronously can trigger runtime panics or unsound cross-thread movement of !Send host variables.

Related CPE's

Could not find any relations

References

https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-vcg5-q8m5-8379

https://www.vulncheck.com/advisories/wasmtime-42.0.0-before-48.0.6-and-49.0.0-before-49.0.3-async-entrypoint-enforcement-bypass

Weaknesses

[email protected]

Primary

CWE-1265

CVSS impact metrics

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

4.8 · Medium