Description


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.

Related CPE's


Could not find any relations

Weaknesses



CWE-770

CVSS impact metrics


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

6.2 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-29T16:18:06.577Z

14 hours ago

Last modified

2026-10-29T21:17:17.937Z

9 hours ago