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
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References
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
Vulnerability status
Deferred
Published
2026-10-29T16:18:06.577Z
14 hours agoLast modified
2026-10-29T21:17:17.937Z
9 hours ago