medium4.8
CVE-2026-119140
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows malicious components to panic the host via thread…
Impact
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows malicious components to panic the host via thread.yield in start functions. Attackers can supply a component whose start function calls an async-lowered import then thread.yield, causing an undisposed fiber drop that crashes embedders.
Affected products
| Product | Affected versions |
|---|---|
| Wasmtime 46.0.0 | before 48.0.6 |
| 49.0.0 | before 49.0.3 |
Versions were read from the advisory text. No structured product data has been published for this record yet.