medium4.8
CVE-2026-119143
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows guest code to trigger a host panic through out-of…
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 guest code to trigger a host panic through out-of-bounds zero-length stream operations. Malicious guests can perform zero-length component model stream reads or writes with unvalidated addresses, causing Direct{Source,Destination}::remaining to panic and crash WASIp3 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.