medium6.2
CVE-2026-119134
Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps component-model resource handle tables only per component instance and does not ch…
Impact
Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps component-model resource handle tables only per component instance and does not charge handle allocations to any ResourceLimiter or StoreLimits. A malicious guest can repeatedly call resource.new and instantiate sub-components to exceed the per-instance cap many times over, causing unbounded host memory growth.
Affected products
| Product | Affected versions |
|---|---|
| Wasmtime | before 36.0.18 |
| 37.0.0 | before 48.0.6 |
| And 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.