MEDIUM 5.9 NVD
CVE-2026-119136
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
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.
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.
This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-10-29 via NVD.
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